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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&#176; to 101&#176;API in accordance with American Petroleum Institute (API) standards. <ul style="margin-top:0px; padding-top: 5px; padding-bottom: 5px;"><li> Conform to the accuracy requirements for ASTM thermo-hydrometers</li><li> Lead free ballast and glass</li><li> 381mm (15") long</li><li> Temperature standardization: 60&#176;F (15&#176;C)</li><li> Thermometer contains mercury-free blue spirit organic liquid fill with a temperature scale of 0/150&#176;F</li><li> Individually serialized</li><li> Hand inspected by our U.S. quality team </li><li> Packaged with a multi-language (English, French, German, Italian, Portuguese, and Spanish) Statement of Accuracy indicating accuracy traceable to NIST 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.</li></ul>

H-B DURAC Safety 19/31 Degree API Combined Form Thermo-Hydrometer

safety-19-31-degree-api-combined-form-thermo-hydrometer

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