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Manual Hydrometer

Hydrometer Z-1G for Measuring Specific Gravity



  • Industrial grade hydrometer
  • Unbreakable hydrometer - built with polycarbonate plastic barrel and special heavy-duty glass float that can withstand drops from 10 ft.
  • Scale: 1.100 – 1.350 with .005 subdivisions 
  • -20ºF to +130ºF with correction table
virtually unbreakable hydrometer for measuring specific gravity manually

Hydrometers (density meters) measure the specific gravity of liquids. Specific gravity is the ratio of the density of the liquid being tested to the density of water. In the case of battery testing, the hydrometer is measuring the specific gravity of the battery’s electrolyte. The higher the acid concentration in the electrolyte, the higher the specific gravity. Based on the specific gravity, the user can determine the state of charge of the battery.


Retaining hydrometer readings and data over time is recommended by IEEE as part of any Battery Maintenance Program.



construction and pieces of hydrometer diagram


  • Lead-acid battery testing (SBS also offers digital battery hydrometers)
  • Forklift battery testing
  • Alcohol testing
  • Food and beverage
  • Petrochemical
A scale inside the stem makes it easy to read specific gravity.
  • Scale 1.100 – 1.350
  • 0.005 Subdivisions 


Ordering Information

Part No. Description
Z-1G Industrial grade hydrometer with heavy-duty glass float