This standard specifies the structure and calibration principles of various glass float density meters (hereinafter referred to as density meters) used to measure the density of liquids. This standard applies to all kinds of glass float density meters used to measure the density of liquids.
GB/T 17764-1999 history
2008GB/T 17764-2008 Hydrometers.Principles of construction and adjustment
1999GB/T 17764-1999 Principles of construction and adjustment of glass hydrometers