Twadell Hydrometer

Twadell Hydrometer

The Twaddell scale is a hydrometer scale for reporting the measured specific gravity of a liquid relative to water. On this scale, a specific gravity of 1.000 is reported as 0, and 2.000 reports as 200. Concentrated sulfuric acid with a specific gravity of 1.8 has a Twaddell scale measurement of 160 (as per the linear relationship between readings and sp. gravity). The Twaddell scale is only used for liquids with specific gravity greater than that of water. The scale was used in the British dye and bleach manufacturing industries. While the Baum? scale was adopted throughout England, the Twaddell scale was used in England and Scotland.

Feature of Twadell Hydrometer

• Part of Brannan’s range of Twaddle and Baume hydrometers
• Used for measuring liquids that are heavier than water
• Used for those industries that have not adopted density or specific gravity as the standard unit of measurement
• Can be supplied with either UKAS or traceable calibration certificate
• Manufactured in the UK