GB/T 223.37-1989

Methods for chemical analysis of iron, steel and alloy The indophenol blue photometric method for the determination of nitrogen content after distillation separation

STANDARD published on 31.3.1989

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The information about the standard:

Designation standards: GB/T 223.37-1989
Note: WITHDRAWN
Publication date standards: 31.3.1989
Country: Chinese technical standard
Category: Technical standards GB