Hydrometer, Soil Colloids, Soil Analysisfrom $32.72
Specific Gravity, also known as relative density, is the ratio of the mass of a solid or liquid to be mass of an equal volume of distilled water. The standard temperature of calibration in the U.S. is 60 F / 60 F. All our Bellwether Specific Gravity Hydrometers listed are calibrated at 60 F / 60 F.
Our Bellwether ASTM hydrometers are manufactured in strict accordance to specifications of ASTM (American Society for Testing and Materials) for accuracy and design.
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