API ASTM Hydrometers with Thermometer

API ASTM Hydrometers with Thermometer

VEE GEE API Scale Hydrometers measure the scale which was selected in 1921 by the American Petroleum Institute (API), the U.S. Bureau of Mines, and the National Institute of Standards and Technology (NIST) as the standard hydrometer scale for petroleum products. The API Scale is based on the following formula:

°API @ 60°F = 141.5/(Specific Gravity @ 60°F) - 131.5

The Thermometer Scale (where applicable) for VEE GEE Hydrometers with Thermometers is located in the body. All instruments are suitable for certification for use as a primary reference with NIST traceability.

Key Features

Scale for petroleum products
Thermometer is in SAFETYBLUE °F


Need a Hydrometer Jar or a Hydrometer Case? Choose below:

Hydrometer Jar 21050-600 for a 600 mL jar. See Item Details or Add to Cart

Hydrometer Jar 21050-1000 for a 1000 mL jar. See Item Details or Add to Cart

Hydrometer Case 66CS-16. See Item Details or Add to Cart