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BS 4993-3:1974現(xiàn)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
標(biāo)準(zhǔn)編號： BS 4993-3:1974
發(fā)布時(shí)間：1974/2/28 0:00:00
標(biāo)準(zhǔn)類別：Standard
出版單位：British Standards Institution
標(biāo)準(zhǔn)頁數(shù)：10
標(biāo)準(zhǔn)簡介
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.
標(biāo)準(zhǔn)備注
? British Standards Institution 2013
Amendment notes:
AMD 2028 published 30 June 1976
等同采用的國際標(biāo)準(zhǔn)
ISO 2369:1972 - Similar
