Description
Triple-scale refractometer indicates refractive index (1.333 to 1.365), serum protein (0 to 12 g/dL serum), and urine specific gravity (1.000 to 1.045) from single-drop samples. Also includes reference mark for distilled water. No charts or thermometers needed; adjustment screw compensates for temperature. Comes with instructions, screwdriver, and sturdy carrying case.