GB/T 22401-2008
Photography.Processing chemicals.Specifications for anhydrous sodium metabisulfite (English Version)

Standard No.

GB/T 22401-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

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

Latest

GB/T 22401-2008

Scope

This standard specifies the purity requirements and test methods for photographic grade chemical anhydrous sodium metabisulfite.

GB/T 22401-2008 Referenced Document

• GB/T 20432.1-2006 Photography.Photographic-grade chemicals.Test methods.Part 1:General
• GB/T 20432.5-2007 Photography Photographic-grade chemicals-Test methods- Part 5: Determination of heavy metals and iron content
• GB/T 20432.9-2007 Photography Photographic-grade chemicals Test methods Part 9: Reaction to ammoniacal silver nitrate

GB/T 22401-2008 history

• 2008 GB/T 22401-2008 Photography.Processing chemicals.Specifications for anhydrous sodium metabisulfite