ISO 424:1994
Photography - Processing chemicals - Specifications for anhydrous sodium carbonate and sodium carbonate monohydrate

Standard No.

ISO 424:1994

Release Date

1994

Published By

International Organization for Standardization (ISO)

Latest

ISO 424:1994

Scope

Cancels and replaces the first edition (1976). 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.

ISO 424:1994 history

• 1994 ISO 424:1994 Photography - Processing chemicals - Specifications for anhydrous sodium carbonate and sodium carbonate monohydrate
• 1976 ISO 424:1976 Photographic grade sodium carbonate, anhydrous; Specification