[GB/T 12737-1991] 化工产品中痕量硫酸盐测定的通用方法 还原滴定法[已作废]
发布时间:1991-02-09
实施时间:1992-02-01
本标准规定了化工产品中痕量硫酸盐测定的通用方法。本方法适用于所取试料或试验溶液中硫酸根含量为4.5~..
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[GB 2368-1989] 工业用碳酸钠中总碱量的测定 容量法[已作废]
发布时间:1989-12-01
实施时间:1989-12-01
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[GB 7683-1987] 工业用硫磺中残渣的测定方法[已作废]
发布时间:1988-01-01
实施时间:1988-01-01
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[GB 7684-1987] 工业用硫磺中氯化物含量的测定[已作废]
发布时间:1988-01-01
实施时间:1988-01-01
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发布时间:1988-01-01
实施时间:1988-01-01
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[GB 6709-1986] 黄血盐钠含量的测定方法[已作废]
发布时间:1986-08-13
实施时间:1987-08-01
本标准适用于从炼焦煤气回收中所制得的黄血盐钠含量的测定。
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[GB 6710-1986] 黄血盐钠水不溶物的测定方法[已作废]
发布时间:1986-08-13
实施时间:1987-08-01
本标准适用于从炼焦煤气回收中所制得的黄血盐钠水不溶物的测定。
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[GB 6711-1986] 黄血盐钠水分的测定方法[已作废]
发布时间:1986-08-13
实施时间:1987-08-01
本标准适用于从炼焦煤气回收中所制得的黄血盐钠水分含量的测定。
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[GB/T 3049-1986] 化工产品中铁含量测定的通用方法 邻菲罗啉分光光度法[已作废]
发布时间:1986-04-18
实施时间:1987-04-01
本标准规定了用邻菲啉分光光度法测定化工产品中铁含量的通用方法。本方法适用于所取试液中铁含量为10~5..
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[HG/T 2964-198497] 工业硫氢化钠中硫氢化钠和硫化钠含量的测定(原GB 4178-1984)[已废止]
发布时间:1984-03-06
实施时间:1984-12-01
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[GB 3051-1982] 无机化工产品中氯化物含量测定的通用方法 汞量法[已作废]
发布时间:1983-02-01
实施时间:1983-02-01
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[GB/T 23761-2020] 光催化材料及制品空气净化性能测试方法 乙醛(或甲醛)的降解[即将实施]
发布时间:2020-03-06
实施时间:2021-02-01
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[GB/T 23762-2020] 光催化材料水溶液净化性能测试方法[即将实施]
发布时间:
实施时间:2021-02-01
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