The refractometer series are based on the principle that the refractive indices of liquids change when the concentration changes. It features high-quality optics with smooth focusing. Its main body is made of aluminum alloy. The internal optical lens with high refractive index make up the precision optical system

Measuring range:
total serum or plasma protein (SP): 2-14g/dl,
Urine specific gravity of dogs (or large animals): 1.000~1.060RI
Urine specific gravity of cats (or small animals): 1.000~1.060RI
Triple scales:
the left one is for testing urine specific gravity of large animals like dog
the middle one is for testing urine specific gravity of small animals like cat
the right one is for testing serum or plasma protein level for all animals
Normal urine specific gravity range:

Cats; 1.001-1.080 S.G
Dogs: 1.001-1.065 S.G
Product Features

Easy to use
Durable and sturdy
No battery required

Notice:
Accurate measurement based on good calibration, please calibrate the refractometer before your first use. But you don’t have to calibrate it frequently, once every a few months is OK|.
When you put your sample to be tested on the daylight plate, make sure the liquid spreads across the entire surface of the prism without air bubbles or dry spots

Clean the instrument with a soft cloth after each use, keep the refractometer dry and clean, which will keep the instrument accurate and durable. Do not put the entire instrument into water to wash, this may lead the refractometer to be foggy or rusty inside|.
Please do not loose any connection part, and don’t dropping, colliding, shaking the instrument intensely