This standard BS 6075-3:1981 Methods of sampling and test for sodium hydroxide for industrial use is classified in these ICS categories:
- 71.060.40 Bases
This International Standard specifies a 1,10-phenanthroline photometric method for the determination of the iron content of sodium hydroxide for industrial use.
This method is more sensitive and more widely used than the 2,2′-bipyridyl method which was specified in ISO/R 983:1969.
The method is applicable to products having iron contents equal to or greater than 0,5 mg/kg.
https://www.en-standard.eu/bs-6075-3-1981-methods-of-sampling-and-test-for-sodium-hydroxide-for-industrial-use-determination-of-iron-content/
