BS 4993-3:1974

Methods of test for aluminium fluoride for industrial use. Determination of silica content.

STANDARD published on 28.2.1974

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The information about the standard:

Designation standards: BS 4993-3:1974
Publication date standards: 28.2.1974
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: British technical standard
Category: Technical standards BS

Annotation of standard text BS 4993-3:1974 :

Fusion of a test portion with sodium carbonate/boric acid, dissolution of the melt in nitric acid, formation of the yellow (oxidized) silico-molybdic complex, reduction to the blue form and spectrophotometric measurement at 815 nm. Status: Confirmed