JJG 631-1989
Verification Regulation for Ammonia Automatic Monitor (English Version)
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JJG 631-1989
Standard No.
JJG 631-1989
Language
Chinese,
Available in English version
Release Date
1989
Published By
National Metrological Verification Regulations of the People's Republic of China
Status
Be replaced
2004-09
Replace By
JJG 631-2004
Latest
JJG 631-2013
JJG 631-1989 history
2013
JJG 631-2013
Verification Regulation of Ammonia-Nitrogen Automatic Analyzers
2004
JJG 631-2004
Ammonia Analyzers
1989
JJG 631-1989
Verification Regulation for Ammonia Automatic Monitor
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