gb12689.1

gb12689.1, Total:3 items.

The international standard classification for "gb12689.1" includes: Lead, zinc, tin and their alloys , Chemical analysis of metals .

The Chinese standard classification for "gb12689.1" includes: Heavy metals and their alloys analysis method .

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB/T 12689.1-2004 The method for chemical analysis of zinc and zinc alloys―The determination of aluminum content―The chromaurol S-polyethylene glycol octyl phenylether-cetylpyridine bromine spectrophotometric method and the chromeazurol S spectrophotometric method and th
GB/T 12689.1-1990 Zinc and zinc alloys―Determination of aluminium content―EDTA titrimetric method
GB/T 12689.1-2010 Methods for chemical analysis of zinc and zinc alloys—Part 1:Determination of aluminum content—Chromazurol Spolyethylene glycol octyl phenylether-cetylpyridine bromine spectrophotometry,Chromeazurol S spectrophotometric method and EDTA titrimetry