BS 4993-3:1974现行
Methods of test for aluminium fluoride for industrial use. Determination of silica content
出版：British Standards Institution
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基本信息
标准编号： BS 4993-3:1974
发布时间：1974/2/28 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：10
标准简介
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.
标准备注
© British Standards Institution 2013
Amendment notes:
AMD 2028 published 30 June 1976
等同采用的国际标准
ISO 2369:1972 - Similar
