Description
Description
H-B DURAC Safety 39/51 Degree API Combined Form Thermo-Hydrometer. These combined-form hydrometers with a convenient, built-in thermometer, come in a wide range of models measuring the relative density (specific gravity) of oil and petroleum related products in various ranges from 1° to 101°API in accordance with American Petroleum Institute (API) standards.
Note: Combined form thermo-hydrometers should be stored in a clean, dry, safe place, and should not be subjected to extreme temperatures. Built-in thermometers should be used as a general reference only. For temperature critical applications, a calibrated standard thermometer is recommended.






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