工业用苯乙烯试验方法 第9部分：微量苯的测定 气相色谱法
Test method of styrene for industrial use - Part 9：Determination of trace benzene - Gas chromatographic method
2011-05-12
KS M ISO 6228
산업용 화학 제품 — 환원 적정법에 의한 황산 이온 형태의 미량 황 화합물 함유량의 일반적인 측정 방법
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2020-12-31
GB/T 12737-2008
工业用化工产品中以硫酸根表示的痕量硫化合物测定的通用方法 还原和滴定法
Chemical products for industrial use-General method for determination of traces of sulphur compounds, as sulphate, by reduction and titrimetry
2008-04-01
ISO 6228-1980
Chemical products for industrial use — General method for determination of traces of sulphur compounds, as sulphate, by reduction and titrimetry
工业用化学产品——还原滴定法测定硫酸盐等微量硫化物的通用方法