JB/T 6237.11-1992Electrical contact with the chemical analysis of silver. Benzidine visual colorimetric determination of nitrate content (English PDF)
电触头用银粉化学分析方法 联苯胺目视比色法测定硝酸盐含量
JB/T 6237.11 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| JB/T 6237.9-2008 | Test methods for chemical analysis of silver powder for electric contact material—Part 9:Determinatiln of nitrate content | Valid |
| JB/T 6237.11-1992 | Electrical contact with the chemical analysis of silver. Benzidine visual colorimetric determination of nitrate content | Obsolete |
JB/T 6237.11-1992 is obsolete. It has been replaced by JB/T 6237.9-2008. This page sells the obsolete edition, for projects and contracts that still cite it.
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Issued by
Ministry of Machinery Industry
Level / Type
Industry · Recommended
Issue date
June 26, 1992
Implementation date
January 1, 1993
Scope
JB/T 6237.11-1992 is the English-translated version of 电触头用银粉化学分析方法 联苯胺目视比色法测定硝酸盐含量.
JB/T 6237.11-1992 is the Chinese industry standard "Electrical contact with the chemical analysis of silver. Benzidine visual colorimetric determination of nitrate content".
It was issued on June 26, 1992 by the Ministry of Machinery Industry, and took effect on January 1, 1993. It is obsolete: it has been replaced by JB/T 6237.9-2008.
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Document preview — JB/T 6237.11-1992
National Standard of the People's Republic of China
Issued by: Ministry of Machinery Industry
Contents
- Document data
1 Document data
Sector: Machinery (industry standard).
Issuing body: Ministry of Machinery Industry.
Date of issue: 1992-06-26.
Date of implementation: 1993-01-01.
Status: obsolete, replaced by JB/T 6237.9-2008.
......
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
JB/T 6237.12-1992 — Silver electrical contacts chemical analysis methods - Determination of silver chloride content - Gravimetric method
JB/T 6237.10-1992 — Electrical contacts chemically analyzed by silver. Silver solution PH value measurement
JB/T 6237.10-2008 — Methods for chemical analysis of silver powder for contact materials - Part 10: Determination of silver chloride content by gravimetry
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JB/T 6237.11-1992
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