2008GB/T 6283-2008 Chemical products.Determination of water Karl.fischer method(general method)
1986GB 6283-1986 Determination of moisture content in chemical products Karl Fischer method (general method)
GB 6283-1986 Determination of moisture content in chemical products Karl Fischer method (general method) was changed to GB/T 6283-2008 Chemical products.Determination of water Karl.fischer method(general method).