Hydrometer Calibration service

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What is Hydrometer?

A hydrometer is a specialized instrument used to measure specific mass. A hydrometer is usually made of glass, with a cylindrical shape, with a flask with a round ball containing either mercury or metal to keep it upright.

The hydrometer's principle of operation is based on the Archimedes thrust. For liquids such as kerosene, gasoline, and alcohol, the hydrometer will sink deeper than milk and acids.

Hydrometer is widely used to evaluate the quality of commercial liquids such as alcohol, wine, soft drinks, ...

Hydrometer Calibration procedure

In order to best serve the customers, engineers at EMIN Vietnam have developed the Hydrometer Calibration procedure as follow:

Step 1, Prepare for calibration. In this step, standard instrument and the Hydrometer that requires calibration are needed.

Step 2, Begin the calibration

- Outside Check: Check for scratches, rust, labels (still or lost), ...

- Measurement check: Check quality indicators related to the publication of the manufacturer ...

Step 3, General handling

In the calibration process of Hydrometer, high-precision, low-error, highly specialized, ... calibration equipments are needed to ensure fast, accurate, quality calibration.
After calibration, the accuracy of the Hydrometer is brought to evaluation.

Tỉ trọng kế - dụng cụ đo nồng độ cầm tay tiện dụngIllustration: Hydrometer in use 

EMIN Vietnam’s Calibration and Verification center has been established since 2020 to provide after-sales services. Calibration and Verification center is thoroughly equipped with technical equipment, followed by the assistance from various equipment manufacturers around the globe. At the center, calibration of specialized equipment is successfully carried out by experienced engineers in EMIN Vietnam, ensuring fast, accurate, reliable procedure to meet the most demanding customers’ requirements). Such technical capacity can only be performed by very few technology businesses in Vietnam. Meanwhile, after tireless effort, the Calibration and Verification center of EMIN Vietnam is officially certified to be accredited by the ISO 17025 standard (Jan, 2021)


For further information about Hydrometer Calibration service, please contact

Equipment Verification - Calibration - Repair Service Center - EMIN Vietnam JSC 

Address: No 11, Hoang Cau Moi Street, Trung Liet Ward Dong Da District, Ha Noi City

Email: services@emin.vn - Hotline: 0968.060.220