Page 1 of 4 Alconox, Inc. - User Manual for Critical Cleaning
Contents
1. Manual for Critical Cleaning Procedures Page 4 of 4 e Sensitive optical or precision manufactured parts may require final rinses in deionized or distilled water e Food processing equipment must be rinsed with potable water Back to Top 9 DRYING Drying can effect residues and corrosion Impurities from rinse water can be deposited during evaporation To minimize this dry with techniques that physically remove rinse water from the substrate such as absorbent wiping forced air or air knives azeotropic solvent drying such as isopropyl alcohol final rinse and dry or vacuum drying that may also evaporate residues Water and particularly high purity rinse water can be corrosive to metal substrates during heated and air drying The use of physical removal drying techniques or the addition of corrosion inhibitors with the tolerance of corrosion inhibitor residues to the rinse water can help minimize corrosion Back to Top 10 BATH LIFE EXTENSION AND CONTROL For the highest levels of critical cleaning only freshly made up solutions should be used for cleaning to avoid any potential for cross contamination For industrial critical cleaning applications high levels of cleaning can still be achieved with extended bath life In general a pH change of 1 pH unit towards neutral indicates an exhausted cleaning solution Bath life can be extended by physical filtration of particulates and cooling and settling of sludge and skimming of oils Bath life2. can be extended by adding one half as much detergent of the initial load after partially depleting the cleaning life of a bath Under frequent daily use detergent solutions can rarely be used more than a week even with these bath life extension techniques Conductivity pH and solids by refractometer can be used to control bath detergent concentration Back to Top 11 CORROSION INHIBITION Corrosion during cleaning is accelerated by the same things that accelerate cleaning heat aggressive chemicals time and agitation In approximate order of importance to reduce metal corrosion concerns use less heat lower pH detergents shorter cleaning time and less agitation In general use the mildest pH detergent to limit metal corrosion Higher pH detergents such as SOLUJET or DETO JET have special corrosion inhibitors that allow their use with aluminum SOLUJET and CITRAJET have inhibitors that allow their use on a broad range of sensitive metals without leaving filming amine residues In approximate order of importance in general to reduce plastic corrosion use less aggressive cleaners that have less solvent or surfactant character or use lower concentrations of those cleaners use lower cleaning temperatures use less contact time and finally use less agitation With aqueous cleaning metal corrosion can occur during rinsing and drying Corrosion inhibitors can be added to rinse water provided that any associated inhibitor residue does not interfe
3. Alconox Inc User Manual for Critical Cleaning Procedures Page 1 of 4 1 MIXING DIRECTIONS FOR ALCONOX DETERGENTS Dilute detergent see chart below using warm about 120 F or 50 C or hot about 140 F or 60 C water Ambient temperature water may be acceptable especially for presoak For difficult soils use very hot water above 150 F or 65 C and use double the recommended amount of detergent When cleaning solution may be reused make up fresh solutions frequently as needed ii Rec d Amount Required 2e 0 20 50 a 1 0510 CENCE 1 3 c j CE cE cotabs tablet _ Gi tablet peruse Ambient Ambient NA na Required oujet quid Required Required Back to Top 2 SOAKING Recommended Products ALCONOX LIQUI NOX CITRANOX CITRAJET TERG A ZYME ALCOJET DET O JET LUMINOX TERGAJET SOLUJET AND DETERGENT 8 Typical Use To clean small items hospital catheters and tubes small metal parts and large tank interiors including pharmaceutical and other blending tanks An excellent pre treatment method for loosening soils and preventing drying especially for labware or medical instruments prior to further cleaning Advantages Very little physical effort or expense Concerns Extremely dirty articles or difficult soils may require further cleaning Directions Soak completely submerged in solution until clean This may take several hours depending on the type of soil Remove and rinse thoro
4. asher sanitizers warewashers conveyor washers or spray and pressure washers Advantages Fast effective high volume cleaning Concerns Capital cost article s ability to withstand machine washing conditions Directions Load articles into racks so that open ends face towards spray nozzles Place difficult to clean articles with narrow necks and openings near the center of the rack open side down preferably on special racks with spray nozzles pointing directly into them Minimize touching between articles e Group small articles in baskets to prevent dislodging by spray action e Use only low foaming detergent as per machine manufacturer dose instructions If no instructions use a 1 solution or 1 oz per gallon of wash water Use more or less as needed e Use hot water above 140 F or 60 C Most machines have at least three rinse cycles see Rinsing below Refer to machine manufacturer s directions Back to Top 7 AUTOMATIC SYPHON PIPETTE WASHING Recommended Product ALCOTABS Typical Use Washing pipettes in laboratories Advantages Effective batch pipette cleaning Concerns Pre soak pipettes for best results Directions Completely immerse pipettes immediately after use in a pre soak solution When ready to clean e Drop an ALCOTAB into bottom of washer e Place pipettes in holder into the washer e Turn on cold or warm water at a rate that will fill the washer and completely cover all pipettes then drain to the bo
5. gitation Directions Make up detergent solution in a separate container e Add cleaning solution run machine for several minutes to degas solution and allow heater to come up to temperature e Place groups of small articles in racks or baskets e Align irregularly shaped articles so the long axis of any part faces the ultrasonic transducer usually the bottom e Immerse articles to be cleaned for 2 10 minutes or longer as needed Remove and rinse thoroughly see Rinsing below Back to Top 5 CLEAN IN PLACE Recommended Products ALCONOX LIQUI NOX CITRAJET CITRANOX TERG A ZYME ALCOJET DET O JET LUMINOX TERGAJET SOLUJET AND DETERGENT 8 Typical Use For pipe tank and filtration systems Advantages Assures clean systems without disassembly Concerns Good circulation in system Directions Make up cleaning solution as in mixing directions e circulate solution slowly for at least 1 2 hour Allow several hours for large systems thousands of gallons especially with ambient temperature water e Drain by pumping in one full system capacity of water e Rinse by circulating and draining at least two times the system s water capacity Some filtration units may require more rinsing Back to Top 6 MACHINE WASHERS Recommended Products ALCOJET DET O JET LUMINOX DETERGENT 8 TERGAJET SOLUJET AND CITRAJET Alconox Inc User Manual for Critical Cleaning Procedures Page 3 of 4 Typical Use For high volume cleaning using w
6. re with the surface being cleaned Keeping the surfaces cleaned hot with hot rinse water and using rapid heat or vacuum drying can accelerate drying and minimize metal corrosion Forced air drying and air knives that physically remove rinse water can minimize drying corrosion Drying with hot oxygen free gas such as nitrogen can also control corrosion during drying With mild steel you can have flash rusting when you rinse with hot water and dry with hot air In some instances by lowering the water temperature or drying temperature corrosion can be avoided on mild steel For instance in a case where flash rusting on mild steel had been occurring using 150 F rinse water and ambient air drying rust was avoided by using 120 F in place of the 150 F rinse water For the most sensitive steel you can clean with an inhibited cleaner followed by an isopropyl alcohol rinse or using a corrosion inhibitor added to the rinse water
7. ttom during each cycle e Run water until ALCOTAB has completely dissolved continue running water to rinse thoroughly may take an hour to complete washing and rinsing For analytical or tissue culture work use distilled or deionized water for final rinse Back to Top 8 RINSING Don t neglect the rinse Use ambient warm or hot water A running water rinse directly contacting all surfaces for at least 10 seconds on each surface is desirable If not practical use a series of three or more agitated soak rinse tanks or at least two counter flow cascade rinse tanks For large surfaces several passes with a clean cloth or sponge soaked with rinse water followed by a clean dry absorbent wipe can work In machine cleaning after washing there should be at least three rinse cycles Tap water is suitable for many rinsing applications Give medical and surgical instruments a final rinse in distilled or deionized water In laboratories rinse tissue culture and analytical ware with deionized or distilled water Rinse trace organic analytical ware in distilled or organic free water Give trace metal or inorganic analytical ware a final rinse with deionized water Rinse pharmaceutical equipment according to good manufacturing practice with whichever is required potable deionized distilled sterile pyrogen free or injectable water e Rinse electronic circuit boards and non conducting electronic devices with deionized water Alconox Inc User
8. ughly see Rinsing below Back to Top 3 MANUAL CLEANING Recommended Products ALCONOX LIQUI NOX CITRANOX CITRAJET TERG A ZYME ALCOJET DET O JET LUMINOX TERGAJET SOLUJET AND DETERGENT 8 Typical Use For cleaning small articles such as medical examination instruments labware or circuit boards and large articles such as process equipment Advantages Versatile inexpensive effective Concerns Time consuming and labor intensive May not be effective on difficult to reach areas requiring pre soak ultrasonic or machine cleaning Directions Make up cleaning solution as in mixing directions or use undiluted detergent on a warm wet cloth or sponge for non abrasive scouring Clean as follows Alconox Inc User Manual for Critical Cleaning Procedures Page 2 of 4 e Wet the article with solution by dunking or using a soaked cloth or sponge e Clean with a cloth sponge cotton swab brush or pad that agitates surface soils without marring the surface e Rinse thoroughly see Rinsing below Wear gloves eye protection and other safety equipment if recommended Back to Top 4 ULTRASONIC CLEANING Recommended Products ALCONOX LIQUI NOX CITRANOX CITRAJET TERG A ZYME ALCOJET DET O JET LUMINOX TERGAJET SOLUJET AND DETERGENT 8 Typical Use To clean large batches of articles or for fast convenient cleaning Advantages Fast effective penetrating cleaning Concerns Capital cost material tolerance for ultrasonic a
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