This standard specifies the technical requirements, sampling, test methods, inspection rules, marking, packaging, storage and transportation requirements for chrome skin powder. This standard applies to chrome skin powder for plant tannin analysis.
LY/T 1639-2005 Referenced Document
GB/T 6682 Water for analytical laboratory use.Specification and test methods*, 2008-05-15 Update
QB/T 3812.12 Leather.Determination of water and other volatile matter
QB/T 3812.14 Leather.Determination of sulphated total ash and sulphated water insoluble ash
QB/T 3812.15 Leather.Determination of chrome oxide