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jis。符合水测试方法免费残留氯测量试剂:DPD-F-1(50份)包括测量范围(mg/l):0.05/0.1/0.2/0.2/0.2/0.3/0.4/0.4/0.5/0.7/0.7/0.7/1.0/1.0/1.5/1.5/1.5/1.5/2.0
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400G