2015SN/T 0704-2015 Determination of chromium(Ⅵ)in leather and leather product of import and export.Spetrophotometric method
1997SN 0704-1997 Method for the determination of chromium (VI) in leather gloves for export.Spectrophotometry
SN 0704-1997 Method for the determination of chromium (VI) in leather gloves for export.Spectrophotometry was changed to SN/T 0704-2015 Determination of chromium(Ⅵ)in leather and leather product of import and export.Spetrophotometric method.