Hydrometer, ASTM 5H, 39/51, API, Glass Formerly Pa

HB Instruments Hydrometer, API ASTM, 39 to 51° Range, 0.1 Division, 330mm L, ASTM No. 5H, 0.1° Accuracy, 60°F Standardizing Temperature, Conform to the Accuracy Requirements for ASTM Hydrometers, Individually Serialized, Feature Metal Ballast, Include Multi-language Statement of Accuracy, Tested and Calibrated in Exclusive Triple Accredited/Registered ISO/IEC 17025:2005, A2LA Accredited Laboratory Against Equipment whose Calibration is Traceable to NIST and DAkkS - BEL