Use this instrument to test athletes for dehydration dangers. These result from lack of adequate amounts of fluids in the body due to athletes keeping weight by dehydrating themselves intentionally. Refractometers test the amount of protein in the urine and find if the athletes are engaging in dangerous behavior to maintain their weight class. Measure the specific gravity and refractive index of urine, blood serum, plasma, albumen, and protein. Easy to use, rubber hand grips to block heat, cushioned rubber eyepiece, and non-roll stand. Automatic temperature compensation. Includes plastic pipette, carrying case, and calibration screwdriver.