Digital serum protein urine sg tester clinical refractometer DR501 Digital protein refractometer is developed for quick determination of protein in serum and urine specific gravity.as well as measuring refractive index of solution.

URINE SP. G.:1.000-1.050

SERUM P.:0.1-12.0

Refractive Index :1.3330--1.3900nD

Operation temperature:0.0~50.0 Centigrade(32.0~144.0Fahrenheit)

Power supply:1.5V battery*1

Automatic shut off

Dimensions:121 x 58 x 25(mm)

Net weight:90g (battery not included)