GB/T 14668-1993Air quality. Determination of ammonia. Nesslerreagent colorimetric method (English PDF)
空气质量 氨的测定 纳氏试剂比色法
GB/T 14668 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| HJ 533-2009 | Air and exhaust gas - Determination of ammonia - Nessler's reagent spectrophotometry | Valid |
| GB/T 14668-1993 | Air quality. Determination of ammonia. Nesslerreagent colorimetric method | Obsolete |
GB/T 14668-1993 is obsolete. It has been replaced by HJ 533-2009. This page sells the obsolete edition, for projects and contracts that still cite it.
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Issued by
NEPA
Level / Type
National · Recommended
Issue date
September 18, 1993
Implementation date
May 1, 1994
Scope
GB/T 14668-1993 is the English-translated version of 空气质量 氨的测定 纳氏试剂比色法.
GB/T 14668-1993 is the Chinese national standard "Air quality. Determination of ammonia. Nesslerreagent colorimetric method". It was issued on September 18, 1993 by NEPA, and took effect on May 1, 1994. It is obsolete: it has been replaced by HJ 533-2009.
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Document preview — GB/T 14668-1993
National Standard of the People's Republic of China
Issued by: NEPA
Contents
- Document data
1 Document data
Sector: National standard (Recommended).
Issuing body: NEPA.
Date of issue: 1993-09-18.
Date of implementation: 1994-05-01.
Status: obsolete, replaced by HJ 533-2009.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.
Referenced standards
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GB/T 14668-1993
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