MKT-7.5.3-L-036.001 | Rev 1 Operation Maintenance and Cautions (Protein / Specific Gravity Model J-0351): 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 J-0351b): 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 distributed 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. Testing quality of Colostrum for feeding young calves (BRIX Model J-0351b): 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. Testing total solids in milk for feeding older calves (BRIX Model J-0351b): 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 to 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. After use, clean with distilled water only. Rinse and dry the glass and metal parts. Store the Refractometer in its case in a clean, cool, dry, non-corrosive atmosphere. Handle the hinged cover plate carefully, so as not to break the hinge. 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 every 30 minutes. Never immerse the Refractometer in water. Use extra caution when cleaning to avoid scratching the prism. When used properly, the LW Scientific Refractometer will give years of reliable performance. 1 2 3 4 5 6 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. Protein / Specific Gravity Scale BRIX scale P. 800.525.5614 F. 970.663.5042 1450 Van Buren Ave Loveland, CO 80538 USA MKT-7.5.3-L-036.001 | Rev 1 Operation Maintenance and Cautions Lift the cover plate and add 1 or 2 drops of urine or serum (or plasma) (Protein / Specific Gravity Model J0351): 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 J0351b): 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 distributed 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. Testing quality of Colostrum for feeding young calves (BRIX Model J0351b): 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. Testing total solids in milk for feeding older calves (BRIX Model J0351b): 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 to 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. After use, clean with distilled water only. Rinse and dry the glass and metal parts. Store the Refractometer in its case in a clean, cool, dry, non-corrosive atmosphere. Handle the hinged cover plate carefully, so as not to break the hinge. 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 every 30 minutes. Never immerse the Refractometer in water. Use extra caution when cleaning to avoid scratching the prism. When used properly, the LW Scientific Refractometer will give years of reliable performance. 1 2 3 4 5 6 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. Protein / Specific Gravity Scale BRIX scale P. 800.525.5614 F. 970.663.5042 1450 Van Buren Ave Loveland, CO 80538 USA
