General Specifications for VEE GEE® ASTM Hydrometers: Manufactured in strict accordance to specifications of ASTM (American Society for Testing and Materials) for accuracy and design. All instruments are suitable for certification for use as a primary reference standard with NIST traceability.
Specific Gravity, also known as relative density, is the ratio of the mass of a solid or liquid to the mass of an equal volume of distilled water. The standard temperature of calibration in the U .S. is 60°F/ 60°F. All Bellwether Specific Gravity Hydrometers listed are calibrated at 60°F/ 60°F.
VEEGEE Model No : 6782H,6783H,6784H,6785H,6786H,6787H,6788H,6789H,6790H,67111H,67112H,67113H,67114H,67115H,67116H,67117H,67118H,67119H,67120H,67125H,67126H,67127H,67128H,67129H,67130H,67131H,67132H,67133H,67134H,67135H,67136H,67137H,67138H,67139H,67140H,67141H,
