GB/T 223.75-1991Methods for chemical analysis of iron, steel and alloy--The methanol distillation-curcumin photometric method for the determination of boron content (English PDF)
钢铁及合金化学分析方法 甲醇蒸馏-姜黄素光度法测定硼量
GB/T 223.75 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| GB/T 223.75-2008 | Iron, steel and alloy - Determination of boron content - Methanol distillation-curcumin photometric method | Obsolete |
| GB/T 223.75-1991 | Methods for chemical analysis of iron, steel and alloy--The methanol distillation-curcumin photometric method for the determination of boron content | Obsolete |
GB/T 223.75-1991 is obsolete. It has been replaced by GB/T 223.75-2008. This page sells the obsolete edition, for projects and contracts that still cite it.
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Issued by
State Bureau of Technical Supervision
Level / Type
National · Recommended
Issue date
September 6, 1991
Implementation date
June 1, 1992
Scope
GB/T 223.75-1991 is the English-translated version of 钢铁及合金化学分析方法 甲醇蒸馏-姜黄素光度法测定硼量.
GB/T 223.75-1991 is the Chinese national standard "Methods for chemical analysis of iron, steel and alloy--The methanol distillation-curcumin photometric method for the determination of boron content".
It was issued on September 6, 1991 by the State Bureau of Technical Supervision, and took effect on June 1, 1992. It is obsolete: it has been replaced by GB/T 223.75-2008.
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Document preview — GB/T 223.75-1991
National Standard of the People's Republic of China
Issued by: State Bureau of Technical Supervision
Contents
- Document data
1 Document data
Sector: National standard (Recommended).
Issuing body: State Bureau of Technical Supervision.
Date of issue: 1991-09-06.
Date of implementation: 1992-06-01.
Status: obsolete, replaced by GB/T 223.75-2008.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.
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Related Standards
GB/T 223.76-1994 — Methods for chemical analysis of iron, steel and alloy--The flame atomic absorption spectrometric method for the determination of vanadium content
GB/T 223.74-1997 — Methods for chemical analysis of iron，steel and alloy--The combustion gravimetric/gas-volumetric method for the determination of non-combined carbon content
GB/T 223.77-1994 — Methods for chemical analysis of iron, steel and alloy--The flame atomic absorption spectrometric method for the determination of calcium content
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GB/T 223.75-1991
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