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H-B Instrument™ Durac™ Safety Precision Combined Form Hydrometers, API

These combined-form hydrometers, with convenient, built-in thermometer, measure the relative density (specific gravity) of oil and petroleum related products in various ranges from -1° to 101°API

Manufacturer:  H-B Instrument™ B618230000

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Catalog No. 13-201-531

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  • Conform to the accuracy requirements for ASTM thermo-hydrometers
  • 381mm (15 in.) long
  • Lead-free ballast and glass
  • Temperature standardization: 20°C
  • Thermometer contains mercury-free, blue spirit organic liquid fill
  • Thermometer divisions: 2°
  • Individually serialized

Order Info

Should you require an individual Thermometer Calibration Report, factory calibrated thermometers or custom calibration services are available.



Traceable to NIST
Measuring the relative density (specific gravity) of oil and petroleum related products
-1 to +11° API
Hydrometer: 0.1° Thermometer: 2°
Safety API Combined Form Thermo-Hydrometer
Lead free
Multi-language (English, French, German, Italian, Portuguese, and Spanish) Statement of Accuracy indicating accuracy traceable to NIST
Safety and Handling

Safety and Handling

Recommended Storage : Hydrometers should be stored in a clean, dry, safe place, and should not be subjected to extreme temperatures

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