This standard specifies the method for the determination of the shade and intensity of dyeing with soluble vat dyes. This standard applies to the determination of the shade and intensity of soluble vat dyes.
GB/T 1637-2003 history
2006GB/T 1637-2006 Solubilised vat dyes.Determination of shade and relative strength
2003GB/T 1637-2003 Solubilised vat dyes-Determination of dyeing shade and relative strength