For veternarian and human use, this refractometer provides a quick and accurate indication of vital fluid levels. The triple scale that gives Urine Specific Gravity(SG), Total Serum Protein(SP) and Refractive Index (RI) and ATC which automatically adjust itself to correct temperature discrepancies during use.
312:
1. Measuring Ranges:
a) Serum Protein : 0 - 12g/dl
b) Specific Gravity : 1.000 - 1.050sg
c) Refractive Index: 1.330ND - 1.360ND
2. Division:
a) Serum Protein : 0.2g/dl
b) Specific Gravity : 0.002sg
c) Refractive Index: 0.0005 ND
3. Accuracy:
a) Serum Protein : +/-0.2g/dl
b) Specific Gravity : +/-0.005sg
c) Refractive Index: +/-0.0005 ND
4. Automatic Temperature Compensation (ATC) 10~30 C
5. Size : 30*40*170mm
6. Weight: 205g

311: 1. Measuring Ranges:
a) Serum Protein : 0 - 12g/dl
b) Specific Gravity : 1.000 - 1.050sg
2. Division:
a) Serum Protein : 0.2g/dl
b) Specific Gravity : 0.002sg
3. Accuracy:
a) Serum Protein : +/-0.2g/dl
b) Specific Gravity : +/-0.002sg
4. Automatic Temperature Compensation (ATC)
5. Size:30*40*170mm
6. Weight: 205g