This hydrometer measures the amount of soil colloids in grams of soil samples in suspension. It has been manufactured to the specifications of the American Society for Testing and Materials (ASTM). This hydrometer is often used with a sedimentation cylinder for soil analysis.
- Calibrated for use at 20°C (68°F)
- ASTM Number: 152H
- Soil colloids range: -5 to 60 grams
- Subdivisions: 1.0
- Length: 11 in. (280 mm)