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Hydrometer Calibration

WHAT IS A HYDROMETER?

A hydrometer is a basic tool that is used to measure the ratio of a sample liquid’s density to the density of water. Specific gravity is the density of a substance relative to that of a reference material and may also be referred to as relative density. They can’t be adjusted, so calibration consists of determining a correction factor to apply after taking the measurement. Hydrometers are sensitive instruments and their readings are significantly affected by minor changes in the environment, especially temperature.

WHAT IS IT USED FOR?

Density is a physical property that can be used as a unique identifier of liquids, allowing users to monitor the quality of their products and processes. Such process and quality controls require precise methods to ensure accurate results in density measurement.

WHY IS IT IMPORTANT TO HAVE IT SERVICED AND CALIBRATED?

If your hydrometer is properly calibrated, it should read 1.000 when floating in pure water. Because the density of water changes with temperature, hydrometers are meant to be used at a specific temperature. This temperature is almost always printed on the slip of paper inside the hydrometer.

Types of Hydrometers

      • Density Hydrometers
      • Soil Hydrometers
      • Brix Hydrometers
      • Bark Hydrometers
      • Baume Hydrometers
      • Specific Gravity Hydrometers
      • Alcohol Hydrometers/Liquor

WHAT SERVICES CAN CI SCIENTIFIC OFFER?

Calibration is the key to quality compliance, cost savings and quality Calibration Calibration determines the measurement accuracy of your hydrometer. With routine calibration and adjustment, you can measure safely, ensure complete compliance and avoid the costs of inaccurate measurements. Achieve and maintain compliance through consistent procedures and adhere to local and global regulations and standards, such as:

      • ISO 9000
      • ISO 17025

Corrections must be applied if the hydrometer is used in conditions where temperature, surface tension or manner of reading differs from those for which the hydrometer is calibrated. Tabulated values of these corrections, together with some definite information relating to them, are available in the following standards: AS 2371:1994; CSIRO Technical Memorandum No. 29, 1985; AS 2026:2003; ISO 649:1981; ISO 2148:2004. All other Hydrometers – Specific Gravity, Baume, Soils, Brix, Apparent Density, Bark Gravity – use a combination of the in-house procedure, Section 5.5 and the above standards and calculations provided by NMI.

Gain confidence in your measurements with calibration and certificate services that only CI Scientific can provide. Our market-leading technology and expertise will bring you peace of mind and keep you compliant, with:

      • Industry-leading expertise
      • Fully-compliant calibration procedures
      • Professional, easy-to-read certificates
      • NATA documentation
      • Comprehensive and audit-proof certificates