Soil Analysis ASTM Hydrometers (Specific Gravity and Soil Colloids)Our ASTM hydrometers are manufactured in strict accordance to specifications of ASTM (American Society for Testing and Materials) for accuracy and design.
0.995 to 1.038 Specific Gravity, Soil Analysis Hydrometer, ASTM 151H
0.995 to 1.038 Specific Gravity, Soil Analysis Hydrometer, ASTM 151H.
-5 to 60g Soil Colloids, Soil Analysis Hydrometer, ASTM 152H
-5 to 60g Soil Colloids, Soil Analysis Hydrometer, ASTM 152H.