Product Details
These combined-form hydrometers, featuring a built-in thermometer, are designed to measure the relative density (specific gravity) of oil and petroleum-related products, with models available for ranges from -1° to 101° API, adhering to American Petroleum Institute (API) standards. They conform to the accuracy requirements for ASTM thermo-hydrometers and are constructed with lead-free ballast and glass. Each hydrometer is 381 mm (15") long, with temperature standardization set at 60°F (15°C). The thermometer is filled with mercury-free blue spirit organic liquid, featuring a temperature scale ranging from 0°F to 150°F. Each unit is individually serialized and hand inspected by our U.S. quality team. The hydrometer is packaged with a multi-language statement of accuracy (in English, French, German, Italian, Portuguese, and Spanish), indicating that the accuracy is traceable to NIST. Note that combined form thermo-hydrometers should be stored in a clean, dry, safe place, avoiding extreme temperatures, and the built-in thermometers are intended for general reference; a calibrated standard thermometer is recommended for temperature-critical applications.








