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产品编号：STSD
产品名称：Set of Stream Sediments 1, 3 and 4
产品规格：3X100g
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Certificate of AnalysisFirst issued: 1990 Version: 1990 DESCRIPTIONSTSD-1 to STSD-4 were chosen to represent typical stream sediments from various geochemical environments in Canada. Efforts were made to incorporate a range of concentrations for a substan
