H-B DURAC Safety API Combined Form Thermo-Hydrometers; Traceable to NIST

Built-In Thermometer Included

These combined-form hydrometers with a built-in thermometer measure the relative density of oil and petroleum products from -1° to 101° API, in accordance with API standards.

• Conform to the accuracy requirements for ASTM thermo-hydrometers; 381 mm (15″) long
• Lead free ballast and glass; temperature standardization: 60 °F (15 °C)
• Thermometer contains mercury-free blue spirit organic liquid fill, scale 0/150 °F
• Individually serialized; hand inspected by our U.S. quality team
• Packaged with a multi-language Statement of Accuracy indicating traceability to NIST

Note: Built-in thermometers should be used as a general reference only.