GB/T 609-2006
Chemical reagent General method for the determination of total nitrogen (English Version)

Standard No.

GB/T 609-2006

Language

Chinese, Available in English version

Release Date

2006

Published By

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

Status

Be replaced 2019-01

Replace By

GB/T 609-2018

Latest

GB/T 609-2018

Replace

GB/T 609-1988

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 0.05μg/mL～0.8μg/mL (calculated as N).

GB/T 609-2006 Referenced Document

• GB/T 602 Chemical reagent--Preparations of standard solutions for impurity
• GB/T 603 Preparation of preparations and products used in chemical reagent test methods*， 2023-08-06 Update
• GB/T 6682 Water for analytical laboratory use.Specification and test methods*， 2008-05-15 Update

GB/T 609-2006 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
• 0000 GB 609-1977