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[GB 8570.5-1988] 液体无水氨 水分的测定 卡尔·费休法[已作废]
发布时间：1988-01-03
实施时间：1988-09-01
本标准规定了液体无水(氨液)氨水分的卡尔·费休直接电量测定方法.本方法适用于水分等于或大于50mg/..
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[HG/T 3278-1987] 腐植酸钠(原ZB G 21005-87)[已作废]
发布时间：1987-12-21
实施时间：1988-09-01
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[GB 536-1988] 液体无水氨[已作废]
发布时间：1987-12-02
实施时间：1988-09-01
本标准适用于由氢、氮气在高温、高压下直接催化合成制得的液体无水氨(液氨)。其主要用途为制造硝酸、无机..
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[GB 3599-1983] 碳酸氢铵和氨水中氨态氮含量的测定 酸量法[已作废]
发布时间：1984-02-01
实施时间：1984-02-01
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[GB 2442-1981] 尿素总氮含量的测定方法(甲醛法)[已作废]
发布时间：1982-06-01
实施时间：1982-06-01
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[GB/T 2947-1982] 卡尔·费休法测定尿素、硝酸铵中水分[已作废]
发布时间：1982-03-20
实施时间：1982-12-01
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[GB/T 13257-1991] 工业用尿素灰分的测定[已作废]
发布时间：1900-01-01
实施时间：
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[HG 1-792-1975] 磷酸氢钙(肥料、饲料)[已作废]
发布时间：1900-01-01
实施时间：
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