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H-B Instrument™ Durac™ Specific Gravity/Relative Density Plastic Plain Form Hydrometers

For precise specific gravity measurements

Manufacturer:  H-B Instrument™ B618000100/EMD

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Catalog No. S71794

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Polycarbonate hydrometers are not recommended for use with petroleum-based liquids or other corrosives that would potentially affect the plastic material. They should be stored in a clean, dry, safe place and should not be subjected to extreme temperature



  • Made from optical quality polycarbonate material
  • Durable and shatterproof
  • Made in USA
  • Available in models measuring specific gravity/relative density (g/cm3) of a variety of liquids in various ranges from 1.0 to 1.620
  • Easy to read black scale on yellow back to help avoid eye fatigue
  • 300mm (12 in.) long
  • Lead free ballast
  • Individually serialized
  • Temperature standardization: 15°C (60°C)

Ideal in situations where rough handling or contamination could be an issue, such as in the food or beverage industries.

Hydrometers are made and hand inspected by U.S. quality team in 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 ISO 14001:2004 Environmental Management System registered facility.

Order Info

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


Packaged with a multi-language (English, French, German, Italian, Portuguese, and Spanish) Statement of Accuracy indicating accuracy traceable to NIST.



Traceable to NIST
Ideal in situations where rough handling or contamination could be an issue, such as in the food or beverage industries.
300 mm
0.920 to 1.080
Product Certifications


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