Bel-Art, H-B DURAC Individually Calibrated 29/41 Degree API ASTM 4H Hydrometer

Choose from a wide range of individually calibrated plain form models measuring the relative density (specific gravity) of oil and petroleum related products in various ranges from -1° to 91°API in accordance with the American Petroleum Institute (API) and the American Society of Testing Materials (ASTM) E100 standards.

• Conform to the accuracy requirements of ASTM hydrometers.

• Calibrated traceable to NIST standards at three points; supplied with a detailed calibration report stating corrections to one-tenth of the smallest division

• 330mm (13”) long

• Lead free ballast and glass

• Individually serialized

• Temperature standardization: 60°F/60°F

• Calibrated and hand inspected by our U.S. quality team in our exclusive triple accredited/registered ISO/IEC 17025:2017 and A2LA Accredited Calibration Laboratory; internationally recognized and accepted by the signatory economies of the ILAC/MRA and located in our ISO 14001:2015 Environmental Management System registered facility

• Packaged in a recyclable, deluxe storage box

• Made in the U.S.A

Note: ASTM calibrated hydrometers should be stored in a clean, dry, safe place. They should not be subjected to extreme temperatures.