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This hydrometer has the required size and scale to determine the specific gravity/relative density (g/cmᶟ) of urine samples in ranges from 1.000 to 1.060. Made of lead free glass and lead free ballast. This 130mm (5") hydrometer is individually serialized and has a temperature standardization of 60 degrees F (15 degrees C). This DURAC Hydrometer is hand inspected by our U.S. quality team in our exclusive triple accredited/registered ISO/IEC 17025:2005 and A2LA Accredited Calibration Laboratory; internationally recognized and accepted by the signatory economies of the ILAC/MRA and located in our ISO 14001:2004 Environmental Management System registered facility. It is packaged with a multi-language (English, French, German, Italian, Portuguese, and Spanish) Statement of Accuracy indicating accuracy traceable to NIST. Note: Hydrometers should be stored in a clean, dry, safe place. They should not be subjected to extreme temperatures.