1.1 This standard (Part I) specifies requirements for glass hydrometers having constant mass and graduated to indicate density ( kg/m3 or g/ml) at 20℃.
Note — Hydrometers of special sub-series ( see 0.4 and 4.2 ) shall be graduated to indicate density at either 20 or 15℃.
1.1.1 This standard does not cover hydrometers with built-in thermometers.
IS 3104 Pt.1-1982 history
1982IS 3104 Pt.1-1982 Density Hydrometer Specification Part I Requirements