GB/T 609-1988
Chemical reagent--General method for the determination of total nitrogen (English Version)

Standard No.

GB/T 609-1988

Language

Chinese, Available in English version

Release Date

1988

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2007-06

Replace By

GB/T 609-2006

Latest

GB/T 609-2018

Scope

This standard specifies a general method for converting inorganic nitrogen compounds into ammonium salts and using Nessler's reagent for visual colorimetric determination. This standard applies to the determination of the total amount of trace inorganic nitrogen compounds (including nitrate, nitrite and ammonium salt) in chemical reagents. The detection range is 0.05-0.8 μg/mL (calculated as N).

GB/T 609-1988 history

• 2018 GB/T 609-2018 Chemical reagent.General method for the determination of total nitrogen
• 2006 GB/T 609-2006 Chemical reagent General method for the determination of total nitrogen
• 1988 GB/T 609-1988 Chemical reagent--General method for the determination of total nitrogen