- Standard No.
- GB/T 4325.21-1984
- Language
- Chinese
- Release Date
- 1984
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Replace By
-
GB/T 4325.19-2013
- Lastest
-
GB/T 4325.19-2013
- Scope
- This standard applies to the determination of chromium content in molybdenum powder, molybdenum bar, molybdenum trioxide and ammonium molybdate. Measuring range: 0.0002 to 0.015%.
GB/T 4325.21-1984 history
- 2013 GB/T 4325.19-2013 Methods for chemical analysis of molybdenum.Part 19:Determination of chromium content.Diphenylcarbazide spectrophotometry
- 1984 GB/T 4325.21-1984 Methods for chemical analysis of molybdenum--The diphenylcarbazide photometric method for the determination of chromium content
GB/T 4325.21-1984 Methods for chemical analysis of molybdenum--The diphenylcarbazide photometric method for the determination of chromium content was changed to GB/T 4325.19-2013 Methods for chemical analysis of molybdenum.Part 19:Determination of chromium content.Diphenylcarbazide spectrophotometry.