JJG 631-2004
Ammonia Analyzers (English Version)

Standard No.

JJG 631-2004

Language

Chinese, Available in English version

Release Date

2004

Published By

National Metrological Verification Regulations of the People's Republic of China

Status

Be replaced 2014-02

Replace By

JJG 631-2013

Latest

JJG 631-2013

JJG 631-2004 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