LAXCO Analog Refractometer,Hand Held,9 in. L

Refractometer, Hand-Held, Range 1.000 to 1.050, Automatic Temperature Compensation Yes, Accuracy +/-0.0003, Resolution 0.0005 RI, 0.001 SG, 0.2 g/dL Serum Protein, Function Determines The Urine Specific Gravity, Serum Protein, or Refractive Index By Measuring The Degree of Which Light Bends As It Passes Through The Sample