Soil Hydrometers
These soil hydrometers are calibrated at 20°C (68°F) and manufactured to the specifications of the American Society for Testing and Materials (ASTM).
Model 67151H measures the specific gravity of soil samples in suspension and model 67152H measures the amount of soil colloids in grams of soil samples in suspension. Both models measure 11 inches (280 mm) in length.
Specifications
| Item No. |
ASTM No. |
Specific Gravity Range | Soil Colloids Range | Subdivisions |
| 67151H | 151H | 0.995 to 1.038 | N/A | 0.001 |
| 67152H | 152H | N/A | -5 to 60 Grams | 1.0 |