Refractometer

Kerbl Refractometer. Colostrum measuring device for the accurate and rapid determination of colostrum milk quality.

• Suitable for cow and horse colostrum.
• The quality level of the colostrum can be quickly ascertained with impressive accuracy with just one look through the lens. 

Included in delivery:
refractometer, pipette, screwdriver, cloth and bag


Use:
Open the cover plate, clean the surface of the prism with a soft cotton cloth. Put one or two drops of the solution to be measured onto the prism. Close the cover plate and press it lightly. Read the corresponding scale of light and dark limit indicating the value of the measured solution. In case of the temperature has a lot of variation, you should control the zero point every 30 minutes. After the measurement, clean the remaining liquid on the surface of the prism and the cover plate with soft cotton cloth. After drying, store the instrument carefully.


Calibration by adjustment of the zero line:
Aim the refractometer in the direction of bright light and set the adjusting ring of dioptre until the scale can be seen clearly. Open the cover plate, put one or two drops of distilled water on the prism. Close the cover plate and press it lightly.
Adjust the setting screw to make the light and dark limit coincide with the zero line. If the instrument is ATC (with Automatic Temperature Compensation system), the room temperature must be 20°C whenever the instrument is recalibrated. Once calibrated, shifts in ambient temperature within the acceptable range (between 10°C/30°C) should not effects accuracy.


Explanation of results:
% Brix       Colostrum Quality        lgG (g/l) *
< 17           bad                               0 - 25
18 - 20       poor                              25 - 50
20 - 30       good to average            50 - 100
> 30           very good                      > 100

* Concentration of gammaglobulin per liter of colostrum