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L2000DX User`s Manual - Osprey Scientific Inc.

1. ADIT METHOD edit an existing method ora ACREATE NEW ocreate an entirely new method Choosing2 AREATE NEW will begin the parameter selection for the new method directly If1 ADIT METHOD chosen the next screen will be CHOOSE METHOD x method names to choose the method to edit The existing method names can be viewed by pressing the lt lt NO gt key to scroll backward or lt YES gt gt key to scroll forward Once the desired method is displayed pressing the lt ENTER ON gt key will select the method and the choice will be given to either 1 MODIFY METHOD 2 DELETE METHOD Choosing2 ADELETE METHOD vill delete the chosen method This is the only way to delete unwanted methods NOTE Preprogramed methods cannot be deleted Only user created methods can be deleted Choosing1 MODIFY METHODQIL begin the method parameter editing After this screen whether editing or creating a method the steps are the same Blank Subtraction The first parameter that will be displayed will be BLANK SUBTRACT YES OR NO 22 Enabling blank subtraction allows for the subtraction of a reagent blank if any from the raw chloride measurement before the final result is displayed When blank subtracts on the analyst will be prompted to either measure a blank use a previous blank or input a blank value to be used During the analysis of unknowns ifablankis subtracted the results will be displayed with a B in the upper right corner of the displ
2. partially unscrewing the black cap while holding the tube upright Squeeze the test tube slightly while re tightening the cap and shake the tube vigorously for 20 seconds more Vent again tighten cap and stand the tube upside down on the flat top of the cap and allow to settle for two minutes Place a polyethylene filter funnel in one of the 20 mL glass vials marked with the sample number Position the black capped test tube directly over the top of the funnel and open the dispenser nozzle See Figure 3 Dispense the solution by carefully squeezing the sides of the tube Stop as soonas the first drop of oil appears Allow the solution to pass through the funnel but remove the funnel before any oil can get through Allow the solution to cool for five minutes The sample is now ready for analysis 20 The OPTIONS Menu Except for theA nalysis Loop all program functions of the L2000DX are accessed through the OPTIONS Menu The options available are 1 METHOD CREATE EDIT 2 HEADER INFORMATION 3 DATA MANAGEMENT 4 PRINTER OPTIONS 5 TIME AND DATE b DIAGNOSTICS 7 PC UPLOAD amp SET TEMP The OPTIONS Menuis entered by pressing the lt OPTION gt key at theFirst Screen or theSELECT METHOD Screen Once in theOPTIONS Menu each option will be displayed for 3 seconds and they will continually loop for 3 minutes or until an option is chosen An option is chosen by pressing the appropriate number for the desired option I Creating a
3. 97 Rules amp Regulations 39 Appendix B L2000DX System Methods Table Compound Blank Chlorine Size Extraction Matrix Units Analyte Label Method Name Subtract Multiplier Multiplier Aroclor 1242 Aroclor 1242 Aroclor 1242 fe Wipe Fe 100sem AROCLOR 1242 EOI pa sa jaw OI a ao fe son om RoR pers yes sr Pr vino EI E E yes so fias ri om ppm wocorio A ee ee mm ma ECU ol ai Ts m E E ta i Aroclor 1242 Aroclor 1254 Aroclor 1254 Aroclor 1254 Askarel A 1 33 Soil ASKAREL A ASK A WATER Askarel A Water 40 Compound Blank Chlorine Size Extraction Matrix Units Analyte Label Method Name Subtract Multiplier Multiplier DDT SOIL er fyes 50 IN FCT Soil i CARS AA Soil eee EG Soil CO Ca Trichloro 1 1 00 Soil TRICHLOR TRICHLOR SOIL ethylene Trichloro Water TRICHEOR EN ethvlene 1 1 1 Tri Water 111 111 TRICHL chloro ethane TRICHLETHA TR NE Tetrachloro 1 00 Soil TETRACHLOR Son ethylene TETRA CHLOR AR VINYLCHLOR Tetrachloro ethylene Methylene Chloride Vinyl Chloride Dichloro ethylene Chloride 100 Requires two solvent system with filter omitted 1 Water DICHLORETH DICHLOR YLENE oo 41 Appendix C Technical Data Physical Size Weight Shipping Weight Case Keypad Electrical Battery Power Line Power Charging Power Management Digital Processor A D Converter Memory Method Storage Dat
4. AS THIS MAY DAMAGE IT Place the electrode in the vial to be analyzed and swirl it gently for several seconds Press the lt ENTER ON gt key The L2000DX will take a series of readings Once the readings have converged onaconstant value the result will be displayed along with crucial method information A beeper will sound to indicate that the new value is ready To analyze additional samples press the lt ENTER ON gt key The program will check the ambient temperature and if it is still within the allowable range the program will cycle back to begin the next analysis Proceed as in step 1 above to make the next measurement Samples may be saved for analysis ata later time but the vials should be tightly capped Once they have been read samples should be discarded Do not re analyze samples Pipettes and oil should be disposed of as PCB Organo chlorine waste Analysis solution can be disposed of as ordinary aqueous waste containing nickel 13 Entering Data Alluserinputto the L2000DX Analyzer is through the 16 key keypad on the front panel There are 12 alpha numeric keys and4 function keys Audible feedback is provided on all keys to indicate that a key press has been registered by the processor Datais entered using the alpha numeric keys These keys are active only when an input is required and will be acted on only when they are appropriate for the active screen When numeric input is required only the numbers indicated on t
5. a e ah ea ee 23 MG AX afu RR DA AAA AA 24 Analyte Label ais ovulate AS A is A AD a ARAS 24 Method Name nach rs e See ean ees 24 2 Header Information ui x gee Rae ee hoe a g a en 25 Operator ID issib ian nee tl gee be btigaw hee ideo da td ieee rc 25 C stomer MA AE tl Ba E Ea 25 Aole A A NI 25 Location ID A An 8 25 COMMENTS Us a ee SA ee Ee a ee Bee oe Ge ie LA ee 25 3 Dat Management o bouza ARI LO entra e as tala e a ia tu 26 Storme Data na TER AA A AAA E 26 Clearing stored Datos risas ai 26 4 Printer Options ress aa bia DA AAA E AA AE 27 Printing Data Points When Taken 0 0 cece eee eee 27 Prime toreo Dat ds A le o dis nata 27 Printing Header Information 0 0 eee eee ee eee 28 Pantune Metodista rta as dd 28 5 Date and DAME A A a RS A E a dA 28 Entero Fine 20 do a Doe iria 28 Entera Date ir a e NS Ohi dai ate 28 6 DIAgROSHOS eeii erare ii a bi 28 Checking Electrode Output 0644 Jaden aps ja 28 FE Upload cite tied out kt aan ee he a ee EA eee ee Ree od 28 O Set Temp srra payee een ae needed Ue i eee A bee 29 Entering Temperature us data e AP eee tows be yew eae sane vee 29 Ac epting Temperatur ou i tute a ima De ite eo don dia a pan 29 L2000DX Data Manager et eke WORE 30 Mitrod ction dat noc Res ate oh ds 30 Installatwon 242 4 ii A a bei hag iad 30 Uploading Data accu Ge theese te eee tele A AA ea eter ake e 30 Selecting Datani pt e ANT piel Bam aa a o nar A ao 30 G
6. an L2000DX Analyzer is suspected to be defective contact a DEXSIL representative at the address below to obtain a return authorization DEXSIL CORPORATION ONE HAMDEN PARK DRIVE HAMDEN CT 06517 TEL 203 288 3509 FAX 203 248 6523 Upon return of the unit it will be inspected and a determination will be made as to whether the progi is defective If defective arrangements will be made for repair or replacement without charge THE WARRANTY SET FORTH ABOVE IS EXCLUSIVE AND NO OTHER WARRANTY WHETHER WRITTEN OR ORAL IS EXPRESSED OR IMPLIED DEXSIL SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE DEXSIL CORPORATION IS NOT LIABLE FOR INDIRECT OF CONSEQUENTIAL DAMAGES IN CONNECTION WITH THE USE OF THE PRODUCT Some states do not allow the exclusion or limitation of incidental or consequential damages so t above limitation or exclusion may not apply to you This Warranty applies only to parts or components which are defective and does not cover repair necessary due to normal wear misuse or accidents All warranty repairs reimbursable under this warranty must be performed by DEXSIL CORPORATION or its representative using approved replacement parts Repairs or attempted repairs by anyone other than a DEXSIL representative are not reimbursable under this warranty In addition these unauthorized repair attempts may result in additional malfunctions the correction of which is not covered
7. calibration If this message occurs during the measurement of an unknown the best estimate of the analytical result will be displayed below the warning This number is for reference only it may not be reliable The sample must be re analyzed to obtain an acceptable result If this message occurs during a calibration the electrode mV output will appear below the warning If the warning appears check the following 1 Check the electrode performance as described under Restoring the Electrode After Extended Storage Follow the steps for electrode draining and refilling then recheck the electrode output If this message occurs during calibration the electrode is most likely damaged See above under The electrode will not calibrate 2 Check electrode leakage The electrode is designed to leak a small amount of filling solution through the gap between the sensing pellet and the epoxy body If the leak rate is too slow or too fast the performance of the electrode may be adversely affected The electrode leak rate should be between 0 2 cm and 3 cm in 24 hours as measured from the filling hole to the top of the fill solution 36 3 Check for sample contamination Some samples contain high levels of sulfur heavy metals waste oil or other organics that may carry over to the final extract If these compounds come into contact with the electrode they can poison the sensing element The output from the electrode will deteriorate with repeated exp
8. well the electrode is functioning Before turning the L2000DX analyzer on insure that the electrode is properly connected to the back of the unit Check the fill level in the electrode and ifnecessary refill the electrode with the Orion filling solution supplied with each lot of reagents To fill the electrode insert the tip of the filling spout of the filling solution bottle into the hole on the side of the electrode Slowly squeeze the solution into the electrode body until it reaches the level of the hole Once the electrode has been filled check the electrode outputby goingto D iagnostics fromthe OPTIONS Menu Rinse and refill the RINSE vial with fresh rinse solution and swirl the electrode in the solution gently for afew seconds Allowing the electrode to sit in the rinse solution verify that the mV reading is greater than 140 mV Ifthe output does not reach at least 140 mV within a minute refill the RINSE vial with fresh solution and recheck the output If this does not improve the output refill the electrode with fresh fill solution See Electrode Care and Maintenance 15 Sample Preparation Oil Samples Before a transformer oil sample can be analyzed with the L2000DX the PCB Chlorinated Organics must be chemically converted to chloride 1 Remove the cap from a black capped tube and add oil up to the 5 mL line using a polyethylene pipettor See Figure 2 Replace the cap tightly on the tube Break the bottom colorle
9. yyyy XX XX XXXX lt ENTER gt REV 2 December 7 2000 45 3 DATA MANAGEMENT STORE EACH POINT Y N CLEAR DATA MEMORY YES ALL DATA WILL BE LOST PROCEED 4 PRINTER OPTI ONS PRINT POINTS WHEN TAKEN Y N PRINT LAST XXXX POINTS PRINT HEADER NOW YIN PRINT METHOD NOW YIN 6 DIAGNOSTICS DIAGNOSTICS XX mV xx C 7 PC UPLOAD 3 BEGIN UPLOAD lt BACK gt TO STOP 46 8 SET TEMP INPUT TEMP INC xx x C RAW NEW TEMP TO USE xxx C OK Y N YES REV 0 December 7 2000 METHOD NFORMATI ON B2 ENTER SCROLLS THROUGH METHOD BACK RETURNS TO A METHOD method name SUBTRACT BLANK YES OR NO CHLORINE XX X 99 9 SIZE CORRECT ON sa EXTRACTION MULT matrix units ANALYTE LABEL max 16 char gt p gt gt I gt REV 1 December 7 2000 47 48 DEXSIL CORPORATION L2000DX ANALYZER ONE YEAR LIMITED WARRANTY DEXSIL CORPORATION warrants the L2000DX Analyzer against defects in material or workmanship for a period of one year from the date of purchase During the warranty period an product which is determined by DEXSIL to be defective in material or workmanship and returned DEXSIL as specified below will be as the exclusive remedy repaired or replaced at DEXSIL s option The cost of repair or replacement is included shipping costs are not and are to be paid by the customer In the event that
10. 15 CALIBRATION SOLUTION READY NEASURENE CAL TEIP 20 C Mm 6 DIAGNOSTICS 8 SET TEIP Y BLANC IN HETHOD yes USE BLANK USE PREVIOUS PUT PROBE INTO YES NO ye BLANK YES NO da BLAK ENTER yes no no US NG BLAK TEASRENE ANALYZE SUPLE 00 0 PROGRESS BLANK READ NG 0 0 no a i OPTIONS anal te abel REV 1 December 7 2000 READINGS gt Ama OY lt D o 43 1 METHOD CREATE EDIT 9 1 EDIT METHOD 2 CREATE METHOD SUBTRACT BLANK YES OR NO H CHLORINE XX X 99 9 SIZE CORRECTION 01 0 EXTRACTION MULT 01 0 1 01L 2 SOIL 3 WATER 4 W PE 1 PPM 2 MG KG 3 PPB 4 ug sdm ANALYTE LABEL max 16 char NAME OF METHOD max 16 char P P SELECT METHOD method names 1 MODI FY METHOD 2 DELETE METHOD SUBTRACT BLANK YES OR NO CHLORINE XX X 99 9 SIZE CORRECT ON 01 0 EXTRACTION MULT 01 0 1 01L 2 SOIL 3 WATER 4 W PE 1 PPM 2 MG KG 3 PPB 4 ug sdm ANALYTE LABEL max 16 char NAME OF METHOD max 16 char ARROWS SCROLL THROUGH METHODS N WA DELETE Y N method name 2 y Rev 2 December 7 2000 ENTER a 2 HEADER INFORMATI ON HEADER SETUP lt BACK gt TO EXIT OPERATOR 1D 16 char max CUSTOMER 1D 16 char max JOB ID 16 char max LOCATION ID 16 char max COMMENTS 16 char max 5 DATE AND TIME TIME XxX xx XX Xx lt ENTER gt DATE mm dd
11. 2000DX Data Manager combines filters so that the data displayed printed or exported satisfies all the filters For example if you select aCustomerand aJobfilter you will see only data records with the required Customer number and the required Job number not data with either the Customer number or the Job number As soon as you select any filter a Clear Allbutton appears in the dialog box to allow you to quickly clear all filter selections A Clear All Filters button will also appear on the L2000DX Data Manager window so you can clear filters later without returning to the Define Sample Selections dialog box Generating a Report Choosing Print Report at the File menu causes theReport Page Format dialog box to appear This box allows you to specify a title for your report In the edit field type a title of up to 70 characters to be centered in the header of the report form Click thePrint Previewbutton to see what the report will look like You may choose to print the report from the preview screen Click the Cancel button to dismiss the Report Page Format box without previewing the report Exporting Data To export data to a Microsoft Excel spread sheet chooseExport from the File menu This will open the Save As dialog box to allow you to choose the location for saving the currently active data set in Microsoft Excel spreadsheet format 31 Care and Maintenance Your L2000DX is designed for ease of use and reliability and requires ver
12. Copyright Notice L2000DX User s Manual and other documentation copyright O 1998 and 2001 Dexsil Corporation All rights reserved Disclaimer Dexsil Corporation makes no representations or warranties with respect to the contents hereof and specifically disclaims any implied warranties of merchantability or fitness for any particular purpose Further Dexsil Corporation reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of Dexsil Corporation to notify any person of such revision or changes Trademarks L2000 and Dexsil are trademarks of Dexsil Corporation DEXSIL CORPORATION One Hamden Park Drive Hamden CT 06517 Tel 203 288 3509 Fax 203 248 6523 http www dexsil com F USERS PUBLIC Instructions L2000 L2000DX ManualV 1 24 RV4 wpd Version 1 24 Rev 4 March 2006 Table of Contents Introduction to the L2000DX Analyzer 0 0 0 000 cc eens 1 Sample Preparation uz uns inda eg ITA os DIE GA LO GI BT A DIE DES DA DADO 1 Chloride Conversion Reaction bu sey eke hte bee a ae eee whee Ke 2 Odanti Cat OM A IAS ata ns ae T park Soe a ep ee Rae See eh 2 Unpacking siasi ien eni eea cee tw a eae Rei Ae a a cada 3 Listot Components esas sr e st ES se ie ao ee 3 L2000DX Analyzer Carrying Case With Contents 4 List of Reagent Opuons il ka podra Sed ee bow ea eee Aw hs 4 Option 40 Oil Test aida apt 4 Option 2 20 Soil Tests ps Bad RERA A A b
13. ESSARY When an electrode isnot to be used fora period of more than one week or for an indefinite period drain the filling solution from the electrode flush the inside one or more times with distilled water and store it dry with the protective black cap to protect the sensing membrane Make sure to follow the procedures for restoring electrodes before using the electrode again seeRestoring the Electrode After Extended Storage Otherwise the electrode filling solution should not be allowed to evaporate causing crystallization For short periods of time between sample measurements including up to one week storage maintain filling solutionin the electrode and store the electrode in rinse solution NOTE Ifa period of 12 hours overnight or longer elapses between measurements drain a portion of the filling solution from the electrode add additional filling solution to the filling hole and start with fresh rinse solution Trouble Shooting The instrument does not turn on 1 The battery is dead Plug in the AC adapter and retry 2 The power management circuit has been overloaded and is locked due to a severe static electric discharge during the connection of the electrode Open the back of the instrument by removing the four Phillips head screws Disconnect the battery and reconnect it The analyzer should turn on as normal except that the time and date will have been lost and must be re entered Follow the procedure outline under Electrode C
14. R 20 01 DTR 21 01 DTR 21 02 DTP 09 01 DTP 09 02 DTP 11 01 DMR 16 01 PCB Detection Technology Dexsil Corporation L2000DX Analyzer A B Dindal C K Bayne E N Koglin Draft Environmental Technology Verification Report US EPA Office of Research and Development Washington D C Report December 2000 Analysis of Water for PPB Range Chlorinated Organics Using a Total Organic Chlorine Analyzer Theodore B Lynn Ph D Mary Kate Boggiano Larry M Sacramone David L Balog Andrew C Lynn Dexsil Corporation Presented at the Waste Testing and Quality Assurance Symposium 2001 August 13 16 2001 Arlington VA Low Level Detection of PCE in Monitoring Well Samples Using a Total Organic Chlorine Based Field Method Theodore B Lynn Ph D Dexsil Corporation Keith A Wright Camino California Presented at the Waste Testing and Quality Assurance Symposium 2001 August 13 16 2001 Arlington VA Accurate On Site Analysis of PCBs in Soil A Low Cost Approach Deborah Lavigne Dexsil Corporation Field Test Kit for Quantifying Organic Halogens in Water and Soil Deborah Lavigne Dexsil Corporation PCB Analysis by Gas Chromatography What do the Numbers Mean 1991 Stephen Finch Dexsil Corporation EPA Method 9078 Screening Test Method for Polychlorinated Biphenyls in Soil 3rd edition SW 846 Test Methods for Evaluating Solid Waste Physical Chemical Methods June 1997 Federal Register Vol 62 No 114 6 13
15. YES gt gt key After the measurement has been made the blank result will be displayed as BLANK READING 01 2 After pressing the lt ENTER ON gt key the program will continue to the next step in the analysis as described below A measured blank cannot be edited Only stored blank values can be edited 2 When preparing a blank using the Standard Soil Extraction Solvent DO NOT add any of the water from the bottom of the solvent vial 12 Analysis Prepare samples for analysis as described underSample Preparation Once the samples have been prepared choose the appropriate analysis method and calibrate the meter The program will display instructions as determined by the chosen method 1 Make sure that the method has been selected the instrument has been recently calibrated including any blank determinations and that the analysis solutions have been allowed to temperature equilibrate for at least 5 minutes The display should read ANALYZE SAMPLE method name Press the lt ENTER ON gt key to continue to the screen SAMPLE ID save sample id If the sample ID is correct proceed to the next step Otherwise change the ID as described under Entering Data The indication save will appear in this screen if the option to save data points as they are taken has been selected See Data Management Remove the electrode from the rinse solution and wipe the body carefully with atissue NOTE DO NOT WIPE THE TIP OF THE ELECTRODE
16. a Storage Input Range Electrode Output Display Printer External Printers Parallel Printer Port RS 232 Operating Environment Temperature Humidity Sunlight w 9 230mm d 9 5 240mm h 4 25 110mm 5 Ibs 12 oz 2 6 kg 17 Ibs 7 75 kg Painted Aluminum 16 Position UV Resistant Polyester Membrane Keypad Internal 8V Gel Cell 3 Days of Operation on Full Charge 12 W 115V or 220V Wall Transformer Internal IC Controlled Charging Circuit Automatic Shut Off After 15 Minutes of Non Use With Low Power Warning and Shut Off AM188EM 24 Bit Auto Ranging 28 Pre programed Methods Up to 22 User Defined Methods 1800 pts 300 mV BNC Connector Back Panel Electrode Type ORION 96 17B Combination Chloride Electrode Backlit 2 x 16 LCD 0 32 Character Height 40 Character Onboard Thermal Printer Paper Re Order PN LP THP 01 Canon BJC 4300 BJC 250 and BJ 200ex Epson ActionLaser 1400 and Stylus 740 HP DeskJet 870Cse and LaserJet 4000T 25 pin Female Connector bidirectional Data Upload to PC L2000DX Data Manager required 55 F 100 F 13 C 38 C 85 non condensing Do Not Operate With Electrode Exposed to Direct or Indirect Sunlight 42 Appendix D Program Flow Chart First Screen OPTIONS Menu il DENSIL L20000X Version 1 04 1 METHOD Select Method Screen CHAT ED HET EHD PIWS Analysis Loop CALIBRATION FOR method nane 3 MANAGE
17. aining the gauze pad Grasp the soaked gauze pad with the disposable forceps and using an approved technique wipe an area of 1000 cm 1000 19 cm is equivalentto a square measuring 31 6cmor 12 5 inches on each side Itis equal to 1 08 ft Allow the hexane to evaporate from the wiping material approximately 1 minute Being careful not to contaminate the wipe place it as loosely as possible into the tube with the white dispenser cap Pour the extraction fluid 10 mL ofisooctane into the white capped tube Tighten the cap and solvate the gauze thoroughly for 30 seconds Squeeze the tube to make sure that the isooctane completely washes the gauze This solventnow contains all the PCBs that were removed during the wiping procedure Remove the black dispenser cap from one of the reaction tubes Open the spout on the white dispenser capped test tube and dispense the isooctane extract into the black capped tube up to the 5 mL line Replace the cap tightly on the tube Break the bottom colorless ampule in the tube Shake the tube well for 10 seconds Break the top gray ampule in the tube Shake the tube vigorously for 10 seconds Allow the reaction to proceed for additional 50 seconds total of one minute while shaking intermittently several times Using the 5 mL pipette add five milliliters of extract solution to the back capped tube Tighten the cap securely and shake vigorously until the foam and dark color disappear Vent the tube by
18. are for connecting the electrode The instrument turns on but the time and date have been lost 1 The power management circuit has been overloaded and has reset This is most likely due toa static electric discharge during the connection of the electrode Re enter the time and date and proceed with the operation of the instrument Follow the procedure outline underElectrode Care for connecting the electrode Check electrode output in DIAGNOSTIC Mode 2 The battery has been disconnected and reconnected resetting the power management circuit Proceed as above The instrument turns off when plugging in the electrode 34 1 Alargestatic electric discharge has overloaded the power management circuit Turn Analyzeron in the normal manner Power up will be to the time and date screen Follow the procedure outline under Electrode Care for connecting the electrode The instrument does not provide a millivolt reading in DIAGNOSTI CS after the electrode has been plugged in Check the electrode to verify that it contains the filling solution Ifitis empty or low refill the electrode as described in Restoring the Electrode After Extended Storage 1 Make sure that the bottom half inch centimeter of the electrode is completely immersed in the rinse solution 2 Check the cable for loose connections The millivolt reading will not exceed 140 mV 1 Replace the RINSE solution and swirl the electrode for several seconds before letting
19. ay Chlorine Content The next parameter that can be input is the chlorine content of the target analyte CHLORINE XX X 99 9 Input as a percentage this parameter is used to convert the total chloride reading into an equivalent analyte concentration prior to the display of the result Size Correction The size correction is used to adjust the results for the sample size used fora particular analysis The assumed sample size is 5 grams ofa liquid sample 10 grams fora soil sample and 1000 cm for wipe samples The correction would be calculated from the ratio of the expected sample size to the actual sample size For example ifa 5 gram sample is used for soil analysis the correction would be 10 5 or 2 NOTE In the analysis of transformer oil the sample is typically taken volumetrically therefore a correction for the density of the oil is incorporated into all pre programed Oil Methods The density of atypical dielectric fluid used in transformers Diala A is 0 8833 g cc The size multiplier builtinto each Oil Method is then 1 0 8833 1 13 This allows the results to be displayed as ppm or mg kg The size correction screen is SIZE MULTIPLIER 1 13 Extraction Efficiency Correction Because there are one or more extractions involved in the preparation of samples for measurement a correction for extraction efficiency has been provided for in the method parameters in the screen EXTRACTION MULT 1 11 The correction is entered a
20. by warranty This warranty gives you specific legal rights and you may also have other rights which vary from to state
21. ck the output again Once the output is greater than 140 mV the electrode is functioning correctly and it is safe to proceed with measurements If the electrode output does not reach 140 mV see under Trouble Shooting for remedies NOTE The update rate forthe D i a gnos t i c s display is 6 seconds any keys pressed will not register until the end of the current measurement cycle Basic Operation of the L2000DX General Information The L2000DX meteris equipped with an internal gel cell battery and can be operated with or without the wall adaptor A fully charged battery should be sufficient to operate for 3 full 8 hour days of sample analyses printing each data point To conserve battery power the printer can be turned offand the stored dataprinted or uploaded ata later time To preserve the battery the unit should be plugged into an AC outlet whenever possible The operation of the L2000DX is controlled by a program organized into a series of screens A screen prompts the user for appropriate input or displays output from the processor There are two screens at the beginning of the program that will be referred to throughout the text They are theFirst Screen which appears when the analyzer is turned on and is returned to when turning the meter off manually and the SELECT METHOD Screen which is the next screen in sequence From thes ELECT METHOD Screenthe desired analytical method is chosen prior to analysis From this screen the pro
22. d test tube by squeezing the sides of the tube and shake the mixture for 10 seconds Break the top gray ampule in the test tube and shake the tube vigorously for 10 seconds Allow the reaction to proceed for an additional 40 seconds total of one minute while shaking intermittently several times Using the 5 milliliter pipettor from the basic L2000 system add 5 ml of the L2000 Extraction solution to the black capped tube Tighten the cap securely and shake the tube vigorously until the foam and dark color disappears Vent the tube by partially unscrewing the cap while holding the tube upright Squeeze the test tube slightly while retightening the cap and shake a second time Vent again retighten cap and stand the tube upside down on the flat top of the cap and allow to settle for two minutes 18 11 Place afilter funnel in one of the 20 ml glass vials marked with a sample number Position the black capped test tube directly over the top of the funnel and open the dispenser nozzle Dispense the solution by carefully squeezing the sides of the tube Allow the solution to pass thorough the funnel butremove the funnel before any oil can get through Allow the filtered solution to cool for five minutes The sample is now ready for analysis with the L2000 Analyzer Water Samples High Range 5 2000 ppm 1 Fill sample tube with 10 grams of water sample 2 Add 10 mL of isooctane extraction solvent and shake vigorously for 30 seconds 3 Allo
23. ed CAL ERROR mV xx Pressing the lt ENTER ON gt key will move the program back to the beginning of theA nalysis Loop See CAL ERROR in Error Messages under Trouble Shooting 11 Blank Determination All of the pre programed methods have the option of subtracting a reagent blank built into the method If blank subtraction has been enabled in the chosen method this option will be presented after each calibration The option will be presented as USE BLANK YES NO If NO is chosen the program moves on to the next step in the method as described below inAnalysis If YES is chosen the option will be presented USE PREVIOUS BLANK YES NO If YES is chosen an opportunity will be presented to change the stored blank orto enter a fixed value at USING BLANK OF 0 00 This number in ppm chloride can be edited or accepted as is by pressing the lt ENTER ON gt key The program then continues to the next step as described below under Analysis If NO is chosen the screen will prompt for the blank solution PUT PROBE INTO BLANK lt ENTER gt The blank solution must be prepared as a sample would be using all of the sample preparation steps and reagents but without an actual sample After reaction the blank must be allowed to reach room temperature as described below Insert the electrode into the solution swirl gently for a few seconds and allowto sit With the electrode in the solution press the lt ENTER ON gt or lt
24. ees 5 Option 2a 20 Soil Tests Two Step Procedure 5 Option 35 20 Water Tests cp a te do e NO 6 Option 4 20 Wipe Tests 0 cece eee eee eee 6 Mural Stud ak pipa ea aa Soka bas se 7 Restoring the Electrode After Extended Storage Lu ue ea ee eido 7 Basic Operation of the L2000DX a a a e cee 9 General Mor ss tir Sie Stara is NS e Gade ating sa 9 Turning the Analyzer On and Navigating the Operating Program 10 Cal bra ta e oy eae Doreen yale aw nA he ead 10 Blank Determination qual dey bis ib ee AA lke cs 12 Analysis sey AE ead A ee ee A be 13 Entering Dati cur ns e iS 14 Special Key Sca arnasa aA a BAN REESE nem a MAO oe ah dae pa 14 Electrode Check tota acd oe see hare aes weed de STA Res 15 Sample Preparation pcia ew ah Gee aod re 16 Oil Samples ic ii eee hie a EA eee eee ee ee eG 16 A ea d A hw ar aha eae Ge eek Bee 16 Standard Procedure for Soil Analysis eee 17 Two Step Extraction Procedure for Soil Analysis 18 Wat r samples sui paa ada 19 High Range 5 2000 ppm 0865 La id a A DR aaa 19 Low Range 10 ppb 20 ppm 32 4 pa i a ee ee ee ee ee pa 19 Wipe Salples ASA a N 19 The OPTIONS Menu 2 5 625 406 a ea ee ee a 21 1 Creating and Editing a Method veVeciin mad l e ee e g e 21 Blank Subtractioti DA ws te A A AS at See een es A 22 Chlorine Content 2 65 ada aa a aa A a aa a 23 a A A tet ae vet aa 23 Extraction Efficiency Correcnoni nos 2 622
25. enerating Report cisne bio je oi a 31 ExXportme Date asados ada edad ap 31 Care and Maintenance 20 foie AA AA NA DS A 32 Chango Papel aa g a e ea a ir e oe B 32 General CAE A AS E eee at 33 Electrode Care and Maintenance 0 eee eee eee ee ene 34 Trouble Shooting verise dee elo od wee We Be RA lo eke Re eR A OTe Rs 34 Error Messasesi tl fee geese dk oe out See owe St aid eee ee es ak 36 Appendix A Additional Information Available from Dexsil 38 Appendix B Methods Table 0 0 cece eens 40 Appendix C Technical Data 00 42 Appendix D Program Flow Chart eee 43 Introduction to the LEOOODX Analysis System Congratulations on your purchase ofthe L2000DX Analyzer a versatile analysis system suitable forthe analysis ofa wide variety of chlorinated organic compounds in a variety of matrices The basic principal of the L2000DX system is to measure the total organic chlorine content of a sample and equate that to an equivalent concentration of the target or expected analyte If all of the organic chlorine present is assumed to be derived from the target analyte then an upper limit is established for the compound in question If other organic chlorines are present in addition to the target analyte they will be counted as the target analyte To accomplish this all of the organically bound chlorine must be converted into inorganic chloride and the resulting chloride quantified O
26. equencing number to the sample ID The number begins at 00001 and increments up to 99999 Ifless than 5 spaces are leftin the sample ID then the number is limited to the number of digits left The has the same function as the but the appended number will only have the number of digits as question marks entered NOTE Editing a sample ID with a wildcard will freeze the number at the current value and eliminate the wildcard function Special Keys The lt NO and YES gt keys function as either a yes no response or as arrow keys to move the cursor through a text entry The four special function keys ALPHA OPTION BACK OFF and ENTER ON are used to direct the operation of the program The ALPHA key is used to input letters in a text string The OPTION key from the first or second screen will transfer program operation to theOPTIONS Menu From the RESULT Screen in theAnalysis Loop the OPTION key is used to view the chosen parameters of the currently active Method The BACK OFF key is used to exit from any section of the program back through successive screens to theFirst S creenand ultimately to turn the meter off The ENTER ON key will turn the instrument on and is used to enter any options chosen or to step forward in the program 14 Electrode Check The electrode is the most important component in the system Itis therefore important that the electrode be properly maintained and the initial setup will determine how
27. erature DIAGNOSTICS xxx XXX mV xx C 7 UP LOAD Chose this option to upload stored data to a PC The L2000DX Data Manager must be loaded an running on the target PC See Ll2000DX Data Manager 28 To upload data first connect the L2000DX Analyzer to the PC using the upload cable provided Once connected select the PC UPLOAD option by pressing the lt 7 gt key from theOPTION Menu The display will change to BEGIN UPLOAD lt BACK gt TO STOP Then from the PC choose BEGIN UPLOAD to begin the upload 8 SET TEMP This option allows for the field adjustment of the internal thermistor When adjusting the L2000DX thermistor the resulting temperature measurements are only as accurate as the thermometer used for adjustment To adjust the internal thermistor chooseB SET TEMP by pressing the 82 kev fromtheOPTIONS Menu The L2000DX will check the current temperature and display the raw result on the screen INPUT TEMP IN C XX X C RAW enter the current temperature followed by pressing the lt ENTER ON gt key The adjusted temperature will be displaved with the message NEW TEMP TO USE XX X C 0K Y N NOTE Anadjustment of 5 C max is allowed If the input temperature differs by more than this the temperature will be fixed at the max min allowed 29 L2000DX Data Manager Introduction The L2000DX Data Manageris aPC based data base program specifically designed for data from the L2000DX Analyzer It pr
28. fore any oil can get through Allow the solution to cool for five minutes The sample is now ready for analysis Two Step Procedure for Soil Analysis 1 10 Using the metal spatula and the portable electronic balance supplied with the kit weigh out ten grams of the soil into the empty white capped test tube NOTE Be careful not to get any foreign material into the weighed sample i e absorbent material large rocks etc The empty tube can be tared by placing it on the balance and pressing the lt ON OFF ZERO gt key Add the contents of one break top glass solvent vial to the test tube of soil sample Replace the cap tightly on the tube and shake contents for 3 minutes making sure the entire soil sample is thoroughly wetted Add the colored water component contained in the 6 ml black capped vial to the test tube Recap tightly and shake for an additional 2 minutes Allow the mixture to separate for 2 minutes Remove the plunger froma syringe filter unit in the foil package and remove the black dispensing cap from the reaction test tube and stand it in the rack Remove the top layer from the soil test tube solvent layer using the polypropylene pipette provided and while holding the syringe filter over the reaction tube add7 ml to the syringe filter Add solvent from the syringe filter up to the 5 ml line of the black capped test tube Replace the cap tightly on the tube Break the bottom colorless ampule in the black cappe
29. g the Analyzer On and Navigating the Operating Program Pressing and holding the lt ENTER ON gt key until the printer advances one line and the display activates will turn the Analyzer on and the program will be in theFirst Screen In theFirst Screenthe display will read Dexsil L2000DX Version X XX indicating the current software version running on the L2000DX The version number should match the version number indicated on the cover of this manual From the First Screen pressing the lt ENTER ON gt key will move the program to the SELECT METHOD Screen In the SELECT METHOD Screen SELECT METHOD method id pressing the lt lt NO gt and lt YES gt gt keys will scroll through the stored methods When the desired method is displayed pressing the lt ENTER ON gt key will select it The program will then enter theAnalysis Loopand the program will begin prompting one through the operations necessary to begin the analysis of samples using the chosen method Calibration The first step required before any measurements can be made is to calibrate the instrument The L2000DX operating program will jump to the CALIBRATION screen when a new method is selected when the temperature has changed by more than 5 EC or when the recalibration timeris triggered The display will read CALIBRATION FOR method name indicating the method that is currently selected Press the lt ENTER ON gt or lt YES gt gt keys and the display will indicate that
30. gram enters a series of screens that step the user through the analysis of prepared samples This series includes the calibration steps and blank determination and will loop back for periodic re calibration as necessary This section of the program is referred to the Analysis Loop See below for a block diagram of the program OPTIONS Menu Analysis Loop Once in theA nalysis Loop the analyzer mustbe calibrated The calibration procedure is a single point calibration using a 50 ppm chloride CALIBRATION standard supplied with each batch of reagents This calibration must be repeated approximately every 20 measurements or one hour whichever comes first A timer acounter anda thermistor have been built into the instrument to prompt the user for recalibration when necessary During the calibration procedure the function of the electrode will also be evaluated If the electrode potential for the calibration solution is not within the acceptable limits a warning will be displayed and the program will jump to the diagnostics mode See below under Diagnostics All other functions of the program are accessed by pressing the lt OPTION gt key from theFirst Screen or the SELECT METHOD Screen This section of the program is referred to in the manual as the OPTIONS Menu Although only one choice can be displayed at a time options are organized intoa sequence of choices functioning much the same as a menu typical of most computer programs Turnin
31. gram is easy to use for routine analysis and does not require custom method development The operating program is divided into anAnalysis Loop and theOPTIONS Menu Preprogramed methods are available for use in routine analyses and are easily selected from within the Analysis Loop The software automatically cycles back to critical points in the analysis loop to prompt the user for Calibration Blank Subtraction and Sample ID inputs Measurements can be initiated without requiring any additional programing by simply choosing theMethodand following the on screeninstructions Custom methods can be constructed by selecting theOPTIONS Menu and modifying existing methods or creating a new method see Creating and Editing a Method Unpacking The L2000DX is shipped in its own carrying case complete with all the hardware necessary for operation Upon receiving the L2000DX Analyzer please verify that all of the items listed below are present and in good working order The carrying case for the L2000DX Analyzer should contain the following items L2000DX Electronic PCB Chloride Analyzer Power cube AC DC transformer PC Upload Cable Portable electronic balance amp 100 gm Calibration weight 5 mL pipettor Vial rack Timer Marking pen Two empty 20 mL glass vials for RINSE and CALIBRATION solutions L2000DX Data Manager Software CD Instruction Manual Certificate of Calibration and MSDS VIAL RACK UPLOAD CABLE ELECTRODE 5 m
32. haracter label that will appear on the display indicating the analyte equivalent concentration assuming that all organic chlorine detected in the sample were that analyte The entry screen appears as ANALYTE LABEL analyte label This label can be left blank however something should be entered as this is the only way to identify the expected analyte when the final analytical result is displayed Method Name After all of the method variables have been selected the user will be prompted for the name under which the method will be stored in memory METHOD NAME method name 24 There must be a unique name associated with each method A method name consisting of all blanks is not allowed for this option If an existing method name is entered the prompt EXISTING METHOD OVERWRITE IT will appear Choosing YES will cause the new method to over write the existing one NOTE Pre programed methods cannot be over written If they are modified they must be stored as anew method Choosing NO will loop the program back to theMETHOD NAME screen for a new file name Once a valid method name has been selected program operation will return to the OPTIONS Menu 2 Header Information Associated with each block of data are descriptors that will identify all of the important information needed to use the collected data at a later date Along with the method information date and time etc are header fields available for user selected informati
33. he inorganic chloride The cleaned extract is then reacted and the resulting chloride is quantified For soil analyses therefore only the organic chlorine content is ever quantified Extraneous sources of chloride contamination such as road salt or sea salt are not detected As with soil samples a water sample must also be extracted prior to final analysis The ratio of the solvent volume to the sample volume determines the sensitivity of the test The extract is reacted and the chloride is quantified as above As with soil samples only the organic chlorine is quantified in water samples Wipe tests require that a specific area be wiped using a hexane soaked gauze The gauze is extracted with an organic solvent reacted and the chlorine content determined For wipe samples the standard procedure eliminates most all inorganic chlorine contamination Areas with very high surface concentration of salts may need to be prepared differently Chloride Conversion Reaction Once the sample has been prepared the remaining chloride conversion steps are the same for all sample types The conversion step is areaction of the sample with an excess of metallic sodium in the presence of acatalyst to convert the covalently bound organic chlorine into free chloride ions This reaction of metallic sodium with organo chlorine compounds is vigorous and goes to completion converting all of the organic chlorine to chloride Quantification Upon the completion of the c
34. he keys will be registered To change an entered number use the arrow keys to move the cursor to the desired location and press the correct number key To input letters ina text string such as in a method name or sample ID both an alpha numeric key and the ALPHA key must be pressed When an alpha numeric key is pressed the number associated with that key will be displayed first The ALPHA key is then pressed once twice orthree times to change the character to the desired letter Continued ALPHA key presses will scroll the characters through the letters and the number shown on the face of the key Forexample Pressing the lt 7 gt key will first cause the 7 tobe displayed The cursor will move to the next space and if the ALPHA key is pressed next the 7 changes first to an S then a T followed by a U Pressing the lt ALPHA gt key again will cycle the character back to the 7 Once the desired character is displayed pressing an alpha numeric key will enter the next character above the cursor Having a sample ID that includes a number automatically incrementing with each successive sample will make assigning a unique sample ID much easier This is accomplished by using wildcards in the sample ID There are two wildcard characters that can be used These are the and the They function muchthe same as their DOS equivalents Entering an in a sample ID will add an automatically s
35. he problem polish the electrode as outlined in Care and 35 Maintenance c If these procedures do not work the electrode may need to be replaced Contact Dexsil for return information Insufficient quantity of solvent recovered from soil extraction Some soils are extremely dry or may contain a large percentage of organic material which can absorb enough extraction solvent so that there is less than the required amount of solvent available to complete the test When soils of this type are being tested five grams of sample instead of ten may be used The final reading is then doubled or the Method is modified so that the Sample Size Correction is changed to twice its normal value For instance if after weighing in five grams of soil the final reading on theL2000DX is 35 ppm the actual result for that sample is 70 ppm Make sure to use the full quantity of extraction solvent and follow the instructions as you would fo any sample NOTE This technique causes a loss of precision and should not be used unless absolutely necessary Error Messages CAL ERROR CHECK DRIFT This message is generated during calibration if the electrode output is not between 50 mV and 75 mV If this message occurs 1 Check solutions and change if not correct or not fresh 2 Check electrode output and refill with fresh fill solution if necessary This message indicates that there is excessive drift in the electrode output either during a measurement or
36. holder enough to clear the other side Once in place the roll should spin freely and remain on the holder 6 The paper should now be installed in the paper holder with the free end on top of the roll Withaclean square end fold one corner of the paper back flush with the opposite side to form a45Epoint onthe end If there is nota clean square end on the paper pull off alength of paper and tear a square edge off along the bottom of the case before folding the corner 7 Place the paper flat on the circuit board with the pointed end of the paper extending over the edge of the paper slot Position the point approximately 1 inch from the side of the slot and while keeping the paper flat on the board slide the paper forward so that the point goes under the front edge of the green circuit board and into the printer Continue pushing the paper forward while gently moving the paper from side to side until the paper exits the front of the analyzer 8 Gently pull the paper through from the front of the analyzer until a section of the full width of paper is exposed 9 Ifthe paper does notexit the front of the analyzer remove the paper and retry from step 7 above 32 10 Once the paper has been installed replace the paper access door and turn the analyzer back over General Care Donot allow the instrument to get wet As with any electronic instrument water is the quickest way to destroy the L2000DX s components Store the instrument in
37. i Ai L2000 Analvzer Chbarinated Organics BALANCE TIMER MARKING PEN POWER CUBE RINSE AND CALIBRATION VIALS L2000DX ANALYZER In addition to the aforementioned items in the carrying case the following should be included in the same outer shipping box Chloride ion specific electrode Packet of polishing strips Test tube rack To prevent damage to the instrument in the case of a leak the sample preparation reagents are shipped separately The exact makeup of the reagent pack will depend on the specific reagent option chosen at the time of ordering The options available for the L2000DX and the components contained in each are the following Option 1 Reagents for 40 Oil Tests 1 250 mL bottle of EXTRACT solution 1 250 mL bottle of RINSE solution 1 250 mL bottle of CALIBRATION solution 1 60 mL bottle of Electrode Filling Solution 1 tray of 40 empty 20 mL glass vials 1 box of tissue wipes 1 shelf pack containing l These items are shipped in their original packaging from Orion Once they have been unpacked they should be carried in the above labeled slot in the carrying case 40 filters 40 pipettes 40 reaction tubes black dispenser caps Reorder Part No LP ORK Option 2 Reagents for 20 Soil Tests Standard Procedure 1 250 mL bottle of EXTRACT solution 1 250 mL bottle of RINSE solution 1 250 mL bottle of CALIBRATION solution 1 60 mL bottle of Electrode Filling Solution 1 box of ti
38. ining 20 filters 20 pipettes 20 reaction tubes black dispenser caps 20 empty test tubes with white caps 1 set of instructions Reorder Part No LP WTR Option 4 Reagents for 20 Wipe Tests 1 250 mL bottle of EXTRACT solution 1 250 mL bottle of RINSE solution 1 250 mL bottle of CALIBRATION solution 1 60 mL bottle of Electrode Filling Solution 1 box of tissue wipes 2 pair of safety goggles 1 pair 10 tests 2 pair of neoprene gloves 1 pair 10 tests 1 shelf pack containing 20 filters 20 pipettes 20 reaction tubes black dispenser caps 20 hexane ampules 20 empty test tubes with white dispensing caps 1 box containing 20 gauze pads in 20 mL glass vials 20 10 mL glass bottles containing Extraction Solvent isooctane 1 box containing 20 empty 20 mL glass vials 20 forceps 1 set of instructions Reorder Part No LP WIP NOTE DO NOT STORE REAGENTS IN THE INSTRUMENT CARRYING CASE AS ANY LEAKS WILL DAMAGE THE INSTRUMENT Initial Set Up Once the L2000DX has been unpacked the components checked and the contents of the reagent pack verified the L2000DX can be setup for analysis Locate the vial rack the two empty 20 mL vials and the bottles of RINSE and CALIBRATION solutions Remove the caps from both vials and label one 20 mL vial RINSE and the other CAL Filleach vial approximately full with the appropriate solution and setin vial rack NOTE Itis helpful to label
39. its case when it is not in use and do not expose it to extremely humid environments Be careful not to spill any of the solutions on the instrument They are all acidic and will quickly destroy the circuitry if they come into contact with it If solutions are spilled onto the instrument wipe it off quickly withadamp cloth Do not store solutions in the same case with the instrument as any leakage may cause serious damage This is particularly important when the instrument is to be shipped by air Whenusing the L2000DX where AC poweris available operate the instrument with the AC adapter This will prolong the life of the battery and insure that the battery is always charged Always store the L2000DX with fully charged battery A completely dead battery could take approximately 6 8 hours to charge fully Ifthe L2000DX is to be stored for prolonged periods of time itis important to periodically charge the battery This will prolong the battery life and insure that the analyzer is always ready for use Protect the analyzer from static electric charges The keypad and case are isolated from the internal circuitry and are not susceptible to static discharge However when connecting the electrode to the meter under certain environmental conditions the static discharge may reset the power management circuit Before connecting the electrode first touch the outerring of the BNC connector with one hand while holding the metal connector on the electr
40. ly for one minute Break up any lumps of soil by squeezing the sides of the test tube during the shaking process See Figure 4 Allow the tube to settle upright for two minutes Remove the drying column from its foil pouch by poking the pointed end of the column through the foilandremove the redend cap Pull the plunger completely out of the 10cc syringe Attach the end of the blue drying column to the tip of the syringe by sliding it over the collar on the tip of the syringe This isa tight fit and the drying column may have to be carefully worked onto the syringe Make sure that it is seated tightly Remove the black dispensing cap from the plastic test tube that contains two glass ampules Slide the syringe drying column assembly part of the way into the test tube which contains the two ampules Stand the whole assembly upright Using the polyethylene pipettor remove the extraction solvent from on top of the soil and dispense it into the top of the open syringe barrel Y ou will need to recover enough extraction solvent to fill the syringe barrel to the 7 mL level Try not to remove any soil with the solventas this may clog up the drying column After 7 mL of solvent has been dispensed into the syringe replace the plunger into the back of the syringe and apply pressure so that the solventis forced through the drying column atthe rate of 2 or 3 drops per second NOTE Do not force the solvent through the drying column too fast When the dried solven
41. n the specific application either the standard extraction solvent or the two step procedure will be most appropriate Both systems provide good reproducible recoveries on dry sandy loam type soils The standard procedure is somewhat faster and has fewer steps but should not be used on wet or heavy clay soils Regardless of the solvent system used itis important that split samples be periodically analyzed by areputable laboratory not only to identify confirm the Aroclor present but also to confirm the extraction efficiency of the L2000DX solvent system Contact Dexsil before trying to analyze other types of materials NOTE The quality of the final result is directly determined by sampling technique Itis therefore important to use proper protocols for sample collection and homogenization 16 Standard Procedure for Soil Analysis 1 Using the metal spatula and the portable electronic balance supplied withthe kit weigh out ten grams of the soil into the empty white capped test tube NOTE Be careful not to get any foreign material into the weighed sample i e absorbent material large rocks etc The empty tube can be tared by placing it on the balance and pressing the lt ON OFF ZERO gt key Remove the black cap from the glass vial containing the extraction Figure 4 solvent and pour the entire contents of the vial into the tube containing the soil Replace the white cap on the plastic test tube tightly and shake the tube vigorous
42. nation in Soil Alvia Gaskill Environmental Reference Materials 1993 EPRI PCB Seminar Comparison of the Response of PCB Test Methods to Different PCB Aroclors Stephen Finch Dexsil Corporation Proceedings of The Tenth Annual Waste Testing and Quality Assurance Symposium July 11 15 1994 Arlington VA Effect of Transformer Oil Petroleum Hydrocarbons and Inorganic Salt as Interferences in Field Screening for PCB Contamination of Soil Alvia Gaskill Proceedings of The Tenth Annual Waste Testing and Quality Assurance Symposium July 11 15 1994 Arlington VA Determination of Chlorinated Hydrocarbon Concentrations in Soil Using a Total Organic Halogen Method T B Lynn J C Kneece B J Meyer A C Lynn Presented at the 13th Annual Waste Testing amp Quality Assurance Symposium July 6 9 1997 Arlington VA Improved Extraction Efficiency of Polychlorinated Biphenyls From Contaminated Soil Using a Total Halogen Screening Method W S Schutt Young Ph D A C Lynn T B Lynn Ph D B J Meyer M J Krumenacher Presented at EnvirACS 97 held at the 13th Annual Waste Testing amp Quality Assurance Symposium July 7 9 1997 Arlington VA Electrochemical Technique Ion Specific Electrode Dexsil Corporation L2000 PCB Chloride Analyzer A B Dindal S Billetts Environmental Technology Verification Report US EPA Office of Research and Development Washington D C EPA 600 R 98 109 August1998 38 DT
43. nce the total chlorine content of the sample is known aconversion factor is used to convert the chloride concentration into an equivalent concentration of the target analyte If the contaminant is known the resulting concentration estimates will accurately correlate with the actual concentration of the analyte in the sample as determined by GC analysis in the lab Ifthe contaminantis unknown aconservative or worst case conversion factor is chosen to provide an upper limit for the concentration of the target analyte in the sample There are three basic steps involved in the chemical analysis for total halogen by the L2000DX Sample Preparation Conversion to Inorganic Chloride Quantification The sample preparation step determines the type of chlorine detected 1 e organic inorganic or total and is matrix dependent The sample preparation can be as simple as collecting a transformer oil sample or can involve the extraction ofa soil or water sample In the case of a wipe sample the surface is wiped and the wipe gauze is extracted The steps involved in the conversion to inorganic chloride reaction and the chloride quantification are the same for all matrices The steps in the conversion to inorganic chloride involves the reaction of the sample with metallic sodium and the extraction of the resulting chloride into an aqueous buffer system A chloride specific electrode is used to quantify the extracted chloride Using stored conversion factor
44. nd Editing a Method The key to the utility of the L2000DX analyzer is the versatility of the methods that can be developed for the instrument A method is the complete set of parameters that are necessary to convert a chloride reading into an accurate quantification of the targeted analyte Preprogramed in the meter are anumber of methods for the analysis of many common environmental contaminants These methods can be modified and custom methods can be built by setting any of the conversion parameters used to convert the chloride reading into an equivalent analyte concentration Each method requires 8 parameters to be set These parameters are determined by the composition of the sample and the chemistry of the sample preparation and or extraction procedures used to introduce the sample into the system They can be either calculated from known parameters or determined empirically from preliminary experiments The parameters common to all methods and their allowable ranges are tabulated below 21 Parameter Range of Values Blank Subtraction yes no Chlorine Content 10 99 9 Sample Size Correction 0 01 99 9 Extraction Efficiency Correction0 01 99 9 Matrix Oil Soil Water Wipe Units to be Displayed ppm mg kg ppb ug sdm Analyte Label 16 character alpha numeric Method Name 16 character alpha numeric To create a new method or edit an existing method choosel METHOD CREATE EDIT from the OPTIONS Menu Then choose eitherL
45. ode in the other Then connect the electrode to the Analyzer The L2000DX analyzes for PCBs Chlorinated Organics by finding the total amount of chlorine ina givensample Itis important therefore to keep all extraneous sources of chlorine away from the instrument and the various solutions Take extra precaution when working near salt water or under very warm conditions when contamination by perspiration is possible Never pour used CALIBRATION RINSE or EXTRACT solution back into a storage bottle as the entire bottle may become contaminated 33 Electrode Care and Maintenance The electrode is the most sensitive component of the L2000DX system Care must be taken not to damage the sensing membrane on the tip of the electrode If it does become damaged or contaminated it may be possible to restore the electrode response by polishing To polish the electrode Remove one of the membrane polishing strips from the instrument case and place it flat on asolid surface abrasive side up Place one or two drops of RINSE solution or distilled water on the abrasive strip With the electrode perpendicular to the abrasive strip polish the electrode tip by gently moving tin a circular motion for about 30 seconds Apply constant pressure but do not push too hard on the electrode When finished soak the electrode for five minutes in rinse solution Polishing strips can be reused several times NOTE DO NOT OVER POLISH ELECTRODES SHOULD BE POLISHED ONLY WHEN NEC
46. on Each of these fields is 16 characters long and the information is entered from the key pad as described under Entering Data The available fields are Operator ID Customer ID Job ID Location ID Comments If any of these parameters are changed a new header will be stored in memory to be linked with the data as well as printed on the printout if the printer is enabled The individual fields are edited through each of the individual screens Text is entered as described under Data Entry When printed the header information will appear as follows Time hh mm Date mm dd yyyy Operator ID Customer ID Job ID Location Comments Method Name Matrix BLANK SUBTRACT yes no If yes value Analyte Label CHLORIDE ANALYTE SAMPLE ID READING CONCENTRATION Pressing the lt 2 gt key while in the OPTION Menu will begin the editing of header information at the screen HEADER SETUP lt BACK gt TO RETURN 23 Pressing the lt ENTER ON gt key will continue to the next screen OPERATOR ID XXXXXXXXXXXXXXXX After editing the text pressing the lt ENTER ON gt key will allow editing of the next header field CUSTOMER ID XXXXXXXXXXXXXXXX After editing the text pressing the lt ENTER ON gt key will allow editing of the next header field JOB ID XXXXXXXXXXXXXXXX After editing the text pressing the lt ENTER ON gt key will allow editing of the next header field LOCATION ID XXXXXXXXXXXXXXXX After editing the text pres
47. onversion reaction the resulting chloride ions are extracted into an aqueous buffer The chloride content in the final extract buffer is then quantified using a chloride specific electrode and converted to an equivalent analyte concentration using the conversion factors programed into the analysis method of the instrument The conversion factoris made up of the percent chlorine the sample size multiplier and the extraction efficiency multiplier The analyte concentration is determined by first subtracting the blank from the raw chloride reading except when the Blank Subtraction has been turned off and the resulting corrected chloride value is multiplied by the size and extraction multipliers and divided by the chloride fraction percent chlorine divided by 100 Analyte ICl raw Cl piano size multiplier extraction multiplier chlorine fraction The L2000DX analyzer comes preprogramed with 28 methods providing for analysis of a large number of chloride compounds in most matrices Correction factors are preprogramed to account for all of the steps necessary to run samples using the standard prepackaged reagents If the procedures are modified or other analytes are expected up to 22 custom methods can easily be built The operational program of the L2000DX has been designed to provide the most versatile data reduction platform possible for the analysis of chlorinated organic compounds in a variety of matrices Atthe same time the pro
48. osure to these contaminants If repeated samples cause a drift error but the electrode checks out with the standard solutions check for sample contamination CHECK ELECTRODE This message indicates that the electrode output has exceeded 180 mV If HIGH LOU this message appears the electrode has been damaged or the wrong electrode has been attached to the L2000DX analyzer Check for the correct electrode then follow steps for restoring an electrode This message indicates that an unknown reading is above 5000 ppm in analyte concentration This message only appears during an unknown measurement If this message occurs re analyze the sample using a smaller sample size This message indicates that an unknown reading has resulted in a negative analyte concentration This can be caused by either an electrode malfunction or an improper blank value used i e a large blank value not representative of the true blank If this message occurs check the blank value used or check the electrode function as described above If the electrode checks out investigate possible co contaminants in the sample that may have adversely affected the electrode 37 Appendix A Additional Information Available from Dexsil DTR 10 01 DTR 10 02 DTR 11 01 DTR 11 02 DTR 11 03 DTR 12 01 DTR 12 02 DTR 13 01 DTR 13 02 DTR 14 02 DTR 14 03 DTR 17 01 DTR 17 02 DTR 18 03 Alternative Methods of PCB Analysis Stephen Finch Dex
49. ovides four basic capabilities uploading stored data report generation data export functions and basic data base functions for tracking data from one or more L2000DX Analyzers Installation To install the Data Manager Insert program CD into CD drive and run setup exe The install program will provide guidance for all installation steps Uploading data Each time you upload data from a particular L2000DX unit the software reads from the unit the date it was last cleared and stores this date for future reference It also stores the number of the last record uploaded The next time you upload data from the same unit the software compares the date it reads from the unit withthe stored date If they are the same it continues uploading data from the last uploaded record eliminating any duplication in your data set If the dates are different the software assumes you have cleared the unit since your last upload and begins uploading data with the first record in the unit Note that the software keeps track of multipleL2000D Xunits by reading from each unit its unique factory supplied serial number Toupload data from an L2000DX analyzer connect the analyzer to the PC using the supplied cable then select PC UPLOAD onthe L2000DX unit Once the unit is connected and ready to upload choose Upload from the Communicate menu on the PC Choosing it opens theL2000DX Uploadbox Once this box is open click OK The program will contact the L2000DX analyze
50. r and begin uploading stored data If you want to cancel the process click on theX in the upper right corner of the box then click Abort Transfer in the resulting Communication Status message box Selecting Data Choosing Selection at the menu bar causes theDefine Sample Selections dialog box to appear Here you can choose to display only some of the available data records by using combinations of various filters Note These filters will affect the display printing and export of data Selection Filter This heading left side of the dialog box contains four selections Header Customer Job and Location Check the checkbox for the filter s you want to use You cannot 30 combine Header with any of the other three filters however the other three may be used in any combination When you select one of the filters a drop down menu appears displaying the values available in the active data set Header Range Filter This area lets you choose a range of consecutive Header numbers The Starting and Ending must be different and the Ending number must be greater than the Starting number Sample Range Filter This area lets you choose arange of consecutive Ref s The Starting and Ending may be the same but the Ending number must be greater than the Starting number As you make various filter selections the data in the L2000DX window will change to reflect your choices even while the Define Sample Selections dialog box is open The L
51. s the chloride value is then converted to an equivalent concentration of analyt Sample Preparation The L2000DX can be used to analyze the following matrices Transformer Oil Soil Water Surface Wipe Each matrix requires different preparation prior to the conversion reaction step and subsequent quantification Each of the matrix preparation steps are described in detail under Sample Preparation The routine analysis of transformer oil requires no sample preparation other than to collect a clean sample without introducing any extraneous sources of chloride into the sample such as perspiration orroad salt This is important because for transformer oil there is no sample cleanup procedures to remove inorganic chloride contamination Once collected the sample is reacted and the resulting chloride is extracted and quantified The chlorine quantified in this case is the total chlorine contained in the sample Transformer oil is typically free of inorganic chlorine eliminating the need for any sample cleanup procedure In special cases where transformers have failed due to water contamination or have been removed for service and stored in areas near seawater or road salt inorganic chloride may cause an elevated reading Before a soil sample can be analyzed the organic contaminates must be extracted using an organic solvent Because soil samples invariably contain inorganic chlorine the soil extractis cleaned up to remove all traces of t
52. s a multiplier applied to the final result For example the recovery of chloride ions from the organic phase in the final extraction of oil samples is 90 For oil samples this is the only extraction step therefore the correction multiplier would then be 1 0 90 or 1 11 The typical extraction efficiency forthe recovery of organics from soil samples is 80 Combined with a chloride recovery of 90 the overall extraction correction is 1 0 80 x 0 90 or 1 39 23 Matrix The matrix label for sample type appears in the header information and indicates what type of sample was analyzed The available labels are 1 0IL 2 SOIL 3 WATER H WIPE To choose the matrix label enter the number of the matrix option and press the ENTER ON key NOTE This is alabel only Choosing a matrix does not set any of the numeric conversion factors They must be set separately Units The units variable in a particular method development is simply the text that appears associated with the displayed printed or stored result To choose a label press the number for the desired units The available labels are L PPM 2 MG KG 3 PPB 4 ug sdm Any of the units can be combined with any of the matrices chosen however ug sdm is only meaningful for wipe samples The units ug sdm is shorthand notation formicrograms persquare decimeter whichis equivalent to micrograms per 100 square centimeters i e ug sdm ug 100scm Analyte Label The analyte label is a 16 c
53. sil Corporation Generators Journal Winter 1990 One Example Where Chromatography May Not Necessarily Be the Best Analytical Method S R Finch D A Lavigne Dexsil Corporation R P W Scott Ph D Georgetown University Journal of Chromatographic Science July 1990 A Comparison of Current PCB Analytical Techniques Stephen Finch Dexsil Corporation PCB Forum 3 International Conference for the Remediation of PCB Contamination 1991 Case Study of a New Field Screening Tool for Delineating Soil PCB Contamination Mark B Williams PE and John S Flickinger Dames amp Moore Madison WI Joseph E Shefchek CHMM Wisconsin Power amp Light Madison WI E Jonathan Jackson CHMM Haliburton NUS Environmental Corp Aiken SC Proceedings 1991 EPRI PCB Seminar PCB Determination Simple Low Cost or Complex Expensive Which Method is the Most Reliable in the Field S Finch pp 45 1 to 45 4 Proceedings 1991 EPRI PCB Seminar Application of a New PCB Field Analysis Technique for Site Assessment Roger D Griffin Griffin Environmental Proceedings of Hazmacon 92 March 1992 Available Options for the Analysis of PCBs Stephen Finch Environmental Science and Engineering p 15 Feb March Electrochemical Method for Surface Testing of PCB Contaminated Electrical Equipment Stephen Finch 7th Annual Industry and PCB Forum June 1993 Canadian Electricity Forum A Comparison of Popular Field Screening Methods for PCB Contami
54. sing the lt ENTER ON key will allow editing of the next header field COMMENTS XXXXXXXXXXXXXXXX After editing COMMENTS pressing the lt ENTER ON gt key will loop the program back to the first HEADER SETUPscreen Pressing the lt BACK OFF gt key willexittotheOPTION Menuor pressing the lt ENTER ON gt key will begin the editing process again 3 DATA MANAGEMENT A number of data management options are available to the user They can be selected from theDATA MANAGEMENT Menu Data management options are selected independent of the method chosen and remain in effect until changed by selecting a new option EntertheDATA MANAGEMENT Menu by pressing the lt 3 gt key from the OPTION Menu The first option is STORE EACH POINT Y N Activating this option by pressing the lt YES gt gt key will cause each data point to be stored in memory as itis taken Data points are stored along with all of the method and header information associated with them The default for data storage is to store each data point All data points will be stored automatically unless this option is changed Pressing the lt lt NO gt key will deactivate this option and no further data will be stored unless this option is activated again 26 Once the data storage option has been chosen the next screen is CLEAR DATA MEMORY Y N This option should be used periodically to clear out old or unwanted data Choosing this option erases all stored data and header informa
55. ss ampule in the tube Shake the tube well for 10 seconds Figure 2 Break the top gray ampule in the tube Shake the tube vigorously for 10 seconds Allow the reaction to proceed for additional 50 seconds total of one minute while shaking intermittently several times Using the 5 mL pipette add five milliliters of extract solution to the back capped tube Tighten the cap securely and shake vigorously until the foam and dark color disappear Vent the tube by partially unscrewing the black cap while holding the tube upright Squeeze the test tube slightly while re tightening the cap and shake the tube vigorously for 20 seconds more Vent again tighten cap and stand the tube upside down on the flat top of the cap and allow to settle for two mi Place a polyethylene filter funnel in one of the 20 mL glass vials marked withthe sample number Position the black capped test tube directly over the top of the funnel and open the dispenser nozzle See Figure 3 Dispense the solution by carefully squeezing the sides of the tube Stop as soon as the first drop of oil appears Allow the solution to pass through the funnel butremove the funnel before any oil can get through Allow the solution to cool for five Figure 3 minutes The sample is now ready for analysis Soil Samples To analyze a soil sample for PCB Chlorinated Organics the analyte must first be extracted from the sample There are two solvent extraction systems available Depending o
56. ssue wipes 1 40 cell box containing 20 empty 20 mL glass vials 20 bottles containing Soil Extraction Solvent 1 shelf pack containing 20 filters 20 pipettes 20 reaction tubes black dispenser caps 20 metal scoops for obtaining soil samples 20 10 mL plastic syringes 20 drying columns foil packed 20 empty test tubes with white caps Reorder Part No LP SRK Option 2a Reagents for 20 Soil Tests Two Step Extraction Procedure 1 250 mL bottle of EXTRACT solution 1 250 mL bottle of RINSE solution 1 250 mL bottle of CALIBRATION solution 1 60 mL bottle of Electrode Filling Solution 1 box of tissue wipes 1 set of instructions 1 40 cell box containing 20 empty 20 mL glass vials 20 6 mL black capped water vials 1 shelf pack containing in a heat sealed foil bag 20 empty 25 mL soil tubes 20 filter funnels 20 pipettes 20 reaction tubes with black dispenser caps 20 break top vials containing Soil Extraction Solvent 20 metal scoops for obtaining soil samples 20 syringe filters in a heat sealed foil bag 1 set of instructions Reorder Part No LP SR2 Option 3 Reagents for 20 Water Tests 1 250 mL bottle of EXTRACT solution 1 250 mL bottle of RINSE solution 1 250 mL bottle of CALIBRATION solution 1 60 mL bottle of Electrode Filling Solution 1 box of laboratory wipes 1 40 cell box containing 20 empty 20 mL glass vials 20 bottles of Isooctane 1 shelf pack conta
57. t fills the test tube to the 5 mL line pull back on the plunger to stop the flow of solvent Remove the syringe drying column assembly from the test tube and screw the black dispensing cap tightly onto the test tube Break the bottom colorless ampule in the test tube by squeezing the sides of the tube and shake the mixture well for 10 seconds Break the top gray ampule in the test tube and shake the tube vigorously for 10 seconds Allow the reaction to proceed for additional 50 seconds total of one minute while shaking intermittently several times Using the 5 mL pipettor add five milliliters of extract solution to the back capped tube Tighten the cap securely and shake vigorously until the foam and dark color disappear Ventthe tube by partially unscrewing the black cap while holding the tube upright Squeeze the test tube slightly while re tightening the cap and shake the tube vigorously for 20 seconds more Vent again tighten cap and stand the tube upside down on the flat top of the cap and allow to settle for two minutes 17 Place apolyethylene filter funnel in one of the 20 mL glass vials marked with the sample number Position the black capped test tube directly over the top of the funnel and open the dispenser nozzle See Figure 3 Dispense the solution by carefully squeezing the sides of the tube Stop as soonas the first drop of the organic solvent appears Allow the solution to pass through the funnel but remove the funnel be
58. t over the waste beaker by grasping the body of the electrode firmly in one hand and pushing down on the black cap where the cord enters the electrode The filling solution will drain out of the bottom of the electrode 4 Refill the electrode and make sure that the fill solution is making contact between the black cone and the plastic shell at the bottom of the electrode Ifitis not making contactat all points drain the electrode again and refill 5 Connect the electrode to the BNC connector labeled ELECTRODE on the back of the L2000DX Analyzer and check electrode output 6 Tocheck the electrode turn the Analyzer on by pressing and holding the lt ENTER ON gt key until the printer advances one line and the display screen activates Selectthe OPTIONS Menu from theFirst S creen by the pressing lt OPTION gt key AttheOPTIONS Menu go to DIAGNOSTICS by pressing the lt 6 gt key This display DIAGNOSTICS X X XXX X mV XX X C will indicate the current temperature and then continuously update the electrode output in millivolts mV Place the electrode in fresh RINSE solution gently swirl the solution with the electrode and allow to sit The electrode output should reach 140 mV or greater within 1 minute If the electrode output does not reach at least 140 mV empty the RINSE solution and refill with fresh RINSE solution If this does not improve the electrode output drain the electrode refill it with filling solution and che
59. the reading stabilize 2 Replace the filling solution in the electrode as described in Restoring the Electrode After Extended Storage 3 Polish the end of the electrode Remove one of the membrane polishing strips from the instrument case and place it flat on a solid surface abrasive side up Place one or two drops of RINSE solution or distilled water on the abrasive strip With the electrode perpendicular to the abrasive strip polish the electrode tip by moving it in a circular motion for about 30 seconds Apply constant pressure but do not push too hard on the electrode 4 DO NOT OVER POLISH ELECTRODES SHOULD BE POLISHED ONLY WHEN NECESSARY The electrode will not calibrate 1 During calibration the output from the electrode is checked If it is outside the acceptable range the electrode will not calibrate and the program will jump to DIAGNOSTICS In this mode check the output of the electrode It should be between 50 mV and 75 mV To obtain the proper millivolt output the tip of the electrode must be immersed in calibration solution If the electrode contains adequate filling solution and is immersed in fresh calibratio solution and allowed to equilibrate the output should reach the correct level 2 The electrode will not calibrate even after it has equilibrated a Change the calibration solution and refill the electrode as described in the Restoring the Electrode After Extended Storage b If this does not solve t
60. the electrode should be placed in clean fresh CALIBRATION solution IS CALIBRATION SOLUTION READY 10 Remove the electrode from the RINSE solution gently wipe the body of the electrode with a clean wipe and insert the tip into the CALIBRATION solution NOTE DO NOT WIPE THE TIP OF THE ELECTRODE AS THIS MAY DAMAGE IT Swirl the electrode gently a few times and press the lt ENTER ON gt or lt YES gt gt key Allow the electrode to remain in the calibration solution the meter will briefly display the message MEASUREMENT IN PROGRESS Provided the electrode output is within the acceptable range and the ambient temperature is also within the acceptable range the calibration procedure is complete when the program display briefly CAL TEMP XX C mv XX The calibration results will also be sent to the printer if the printer has been turned on Calibration hh mm mm dd yyyy Version XXXX Method METHOD NAME mV XX X Temp xx x C A XXX X B XX XXX Offset x x The program function will then move to the next step in the chosen method Ifthe temperature is outside the acceptable range the following error message will be displayed Temperature Error xxx C A temperature error indicates that the ambient conditions are not suitable for measurement Save all extracts and move to a location where the temperature is within the acceptable range If the electrode output is outside the acceptable range an error will be display
61. the rack with the location of the RINSE and CAL vials These solutions will be used for the initial setup and calibration of the electrode They will also be used periodically tore calibrate the electrode and check the electrode output Once set up the electrode should remain in the RINSE solution when not in use Prior torunning the Analyzer on battery power it should be charged overnight using the power cube supplied with the instrument The Analyzer can be operated from line power while the battery is charging and should be left plugged in whenever AC power is available Turn on the Analyzer by pressing and holding the lt ENTER ON gt key until the printer advances one line and the display reads Dexsil L2000DX Version 1 24 This screen is theFirst S creenin the operating program The Analyzeris ready to accept instructions Restoring the Electrode After Extended Storage The electrode is shipped empty and should be stored empty whenever it will be left for an extended period of time see lectrode Care and Maintenance To restore the electrode to operating condition 1 Remove protective cap from the tip of the electrode 2 Fill the electrode up to the filling hole in the side with the Orion Electrode Filling Solution supplied with each lot of reagents To fill place the nozzle of the fill solution bottle into the hole on the side of the plastic body and gently squeeze the fill bottle 3 Drainthe electrode while holding it uprigh
62. tion and reformats the data storage space The current header information and the current method are not altered After choosing this option confirmation will be required before the data will actually be erased ALL DATA WILL BE LOST PROCEED Pressing the lt YES gt gt or lt lt NO gt key will complete this option as desired and exit back to theOPTION Menu 4 PRINTER OPTIONS The default option for the printer is to print all data points as they are collected Anytime the header information is edited anew header is printed Anytime an external printer is connected to the printer port on the back of the unit all printouts will be directed to the external printer The first option under 4 PRINTER OPTIONS is PRINT POINTS WHEN TAKENCY N Pressing the lt YES gt gt key will cause each data point to be printed as itis taken This option refers only to the printing of data in theA nalysis Loop Printing stored data points is the next option This option can be turned off to save battery power in the field It will also be turned off automatically if alow power conditionexists Turning off the print option by pressing the lt lt NO gt key will result in no data printout when the data is taken in theAnalysis Loop To obtain a hard copy of the data the data can be printed at a later time To print data after it has been stored press the lt YES gt gt key from the screen PRINT LAST XXXX POINTS Choosing this option will ca
63. use the last xxxx data points to be printed on either the internal or an external printer The default is all of the stored data This number can be edited using the numeric key pad 27 To print the current header information press the lt YES gt gt key from the screen PRINT HEADER NOU Y N This option will print all of the header information on the current printer The last print option is to print out a hard copy of the method parameters At the screen PRINT METHOD NOW Y N Press the lt YES gt gt key to print the method 5 DATE AND TIME Tochange the date and or the time choose this option and enter the correct information in the indicated fields The first option to change is TIME XX XX hhimm lt ENTER gt Enter the time using the 24 hour clock hours then minutes The last entry will cause the current time to be briefly displayed and then the screen DATE mm dd yyyy mm dd yyyy lt ENTER gt Enter the date as a 2 digit month and day followed by 4 digit year 6 DIAGNOSTICS This option should be used to periodically check the output of the electrode such as at the beginning of each day or if the electrode has been stored for an extended period of time Or if an electrode error occurs this option will allow the user to verify the fault and take corrective action Once this option has been chosen the L2000DX will begin measuring the mV output of the electrode and display the results along with the ambient temp
64. wto separate into two phases fora minimum of 2 minutes If aemulsion forms add sodium sulfate shake and allow to separate again Using the disposable plastic pipette remove 5 mL of the top solvent layer and add to the black capped reaction tube available from major chemical suppliers 4 Proceed with test as for an oil sample and quantify using the appropriate LX2000DX method Low Range 20 ppb 5 ppm 1 Collect sample in 1 quartnarrow mouth glass bottle with zero head space Cap tightly and store on ice until analysis 73 When ready to analyze the sample invert sample container gently once or twice and using a plastic pipette remove 35 mL of water from the sample jar by weighing 35 grams of water into atared waste container and discard Then add 10 mL of isooctane to sample container and shake vigorously for 2 minutes 3 Add sufficient chlorine free distilled water to bring the water level up into the neck of the sample bottle the solvent level should be just shy of the top of the neck and allow to set for 3 minutes 4 Withdraw 5 mL of the upper solvent layer Do Not Remove Any Water With the Solvent add to the black capped reaction tube and cap tube tightly 5 Proceed with the analysis as for an oil sample and quantify using the appropriate L2000DX method Wipe Samples il Locate the sealed glass vials containing chromatographic grade hexane and carefully break off the tip Pour the entire contents into the vial cont
65. y little maintenance By following the instructions outlined below you should be able to obtain maximum life from the electrode and the instrument itself Changing Paper 1 Turnthe L2000DX Analyzer off and remove the external power plug if attached Turn the analyzer over lay flat on smooth surface and remove paper access door on bottom 2 Removethe empty paper roll by grasping the roll in the middle with one hand With the other hand gently push one side of the paper bracket out away from the roll while lifting the roll in the middle This will free one end of the spindle Continue lifting the roll out of the bracket until it is free 3 Remove the paper spindle from the spent core and insert into the new roll of paper 4 Withthe L2000DX Analyzer still upside down and the paper access on the right side slide the analyzer to the edge of the table until it hangs over the edge far enough for the paper slot on the keypad to be accessible DO NOT ALLOW THE UNIT TO HANG TOO FAR OVER AS IT MAY FALL 5 Install the new paper roll into the holder with the loose end of the paper coming off the top of the roll Treated side must be on the top of the paper as it exits the roll Grasping the rollin the middle slide the roll between the uprights of the paper holder until the ends of the spindle snap into the holes in the paper bracket While pushing in the paper roll it may be necessary to slide the roll of paper to one side to deflect the paper

L2000DX User`s Manual - Osprey Scientific Inc.

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