MKT-7.5.3-L-036 Refractometer Manual for email
Contents
1. REFM BR32 Follow the operating instructions above for the BRIX refractometer using 1 or 2 drops of colostrum Research indicates that BRIX scores of 22 or higher represent good quality in colostrum 18 21 represent colostrum that can be used for second feedings and scores below 17 will need to be supplemented eTesting total solids in milk for feeding older calves BRIX Model CTL REFM BR32 Follow the operating instructions above for the BRIX refractometer using 1 or 2 drops of milk The expected content of total solids in normal milk would be 12 5 to 13 The following equation was developed by Penn State to convert BRIX reading fo total solids in milk TOTAL SOLIDS 0 9984 x BRIX reading 2 077 Therefore a BRIX reading of 10 4 equals 12 5 total solids and a reading of 10 9 equals 13 total solids As with any precision instrument care should always be used when handling cleaning and storing Storage in a clean dry non corrosive atmosphere is recommended Avoid dropping or strong shocks 1 After use clean with distilled water only Rinse and dry the glass and metal parts Store the Refractometer in its case ina clean cool dry non corrosive atmosphere 2 Handle the hinged cover plate carefully so as not to break the hinge 3 When calibrating the distilled water and specimens to be measured should all be the same temperature If the temperature varies greatly between the two the calibration should be adjusted once ev2. A Lower the cover plate making sure that the water covers the entire surface of the prism View the scale through the eyepiece and using the enclosed small screwdriver turn the adjustment screw fig C to make the light dark boundary coincide meet at the W at the bottom of the protein scale Protein SG model or at the 0 mark BRIX model Using a soft cotton cloth or absorbent paper clean and dry the prism before measuring the first soecimen Operation Protein Specific Gravity Model CTL REFM PRSG Lift the cover plate and add 1 or 2 drops of urine or serum or plasma depending on which test is desired Lower the cover plate Lightly press the cover plate making sure the liquid is evenly distributed across the prism You can now read the value of the protein concentration for serum or plasma or specific gravity for urine from the appropriate scale by reading the boundary line between the light and dark area as it intersects the scale BRIX Model CTL REFM BR32 Lift the cover plate and add 1 or 2 drops of liquid such as wine fruit juice or other liquids containing sugar Lower the cover plate Lightly press the cover plate making sure the liquid is evenly distrib uted across the prism You can now read the percentage of sugar content from the percentage scale by reading the boundary line between the light and dark area as It intersects the scale eTesting quality of Colostrum for feeding young calves BRIX Model CTL
3. LW Refractometer Scientific Instruction Manual Two Models Available CTL REFM PRSG Protein Specific Gravity CTL REFM BR32 BRIX C A Prism n e B Cover Fate no lE C Calibration Screw EEHEHE FHE HHHH i D Tube ee Aoi iiss gi E Focusing Eyepiece D E CTL REFM PRSG Protein Specific Gravity Refractometer Total Protein in serum Range Oto 12 g dl Resolution 0 2 g dl Specific Gravity in urine Range 1 00 to 1 05 sg Resolution 0 002 sg CTL REFM BR32 BRIX Refractometer Brix sugar content Range 010 32 Resolution 0 2 Size 30 x 160 mm Weight 2190 Note Always treat soecimen samples as though they were infectious When using the Refractometer keep it horizontal as you look into the eyepiece so that the specimen sample will be less likely to drip out and contaminate the user and or the surroundings Clean the refractometer between samples and when done using the instrument according to the guidelines contained within these instructions This device has a built in automatic temperature compensation that ranges from 10 degrees C to 30 degrees C 50 to 86 degrees F Adjusting Focusing Eyepiece Prior to inserting a sample aim the front of the Refractometer toward a bright indoor light source Adjust the focusing eyepiece ring fig E until the graduations on the scale can be clearly seen through the eyepiece Lift the cover plate fig B and add 1 or 2 drops of distilled water on the surface of the prism fig
4. ery 30 minutes 4 Never immerse the Refractometer in water 5 Use extra caution when cleaning to avoid scratching the prism 6 When used properly the LW Scientific Refractometer will give years of reliable performance Pa a oa ih J J RH En oo oc g ae or E Protein Specific Gravity Scale BRIX scale MKT 7 5 3 L 036 Rev 1
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