Photography. Processing chemicals. Specification for anhydrous sodium carbonate and sodium carbonate monohydrate Ingestion-build-180956 This International Standard supersedes BS

This International Standard supersedes BS EN 344-1:1993 and BS EN 344-2:1997 which are withdrawn

Linear joint (gap) seals

IEC 61000-3-3:1994

NOTE: Once this standard is published in the EU Official Journal (OJEU) under Directive 2014/68/EU

Photography. Processing chemicals. Specification for anhydrous sodium carbonate and sodium carbonate monohydrate Ingestion-build-180956 This International Standard supersedes BS1 Scope This International Standard establishes criteria for the purity of photographic grade anhydrous sodium carbonate and sodium carbonate monohydrate and specifies the test methods to be used to determine the purity.