Top tips for using your Refractometer to measure colostrum quality.

• Refractometer should be kept free from any visual dirt
• Calibrate the Refractometer using distilled water before each use. If the scale does not read zero (i.e. at the bottom of the blue section) adjust using the calibration screw
• Hold the refractometer up to natural light while looking down the eye piece
• Always wipe the slide and glass surface clean with a clean soft clothpfter a reading