H-B DURAC Individually Calibrated 79/91 Degree API ASTM 9H Hydrometer (B61898-0500)
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<b>[Product Information]</b><br>
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<li>Conforms to the accuracy requirements of ASTM hydrometers; ASTM No. 9H</li>
<li>Calibrated traceable to NIST standards at three points; supplied with a detailed calibration report stating corrections to one-tenth of the smallest division</li>
<li>Measures the relative density (specific gravity) of oil and petroleum related products in accordance with the American Petroleum Institute (API) and the American Society of Testing Materials (ASTM) E100 standards; Range: 79/91 degrees</li>
<li>Individually serialized; lead free ballast and glass</li>
<li>Packaged in a recyclable, deluxe storage box; Former HB # 9H-FC</li>
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