Available in a variety of models measuring specific gravity of heavy and light liquids from 0.650 to 2.000, in accordance with ASTM E100 standards.Conform to the accuracy requirements of ASTM hydrometersCommonly used in food and beverage, chemical, pharmacology, transportation and refrigeration industriesLead free ballast and glass; individually serializedTemperature standardization: 60 °F/60 °FPackaged with a multi-language Statement of Accuracy indicating traceability to NISTNote: Store in a clean, dry, safe place away from extreme temperatures.