2000SN/T 0921-2000 Method for the determination of water-soluble ash and water-insoluble ash of tea for import and export
SN/T 0921-2000 Method for the determination of water-soluble ash and water-insoluble ash of tea for import and export was changed to GB 5009.4-2016 Determination of ash content in food according to the national food safety standard.