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3种有机氯混标 标准品
二乙二醇(标准品)[111-46-6]
Sulfated neatsfoot oil sodium salt
5-Amino-1-naphthol
龙脷叶
倍他米松二丙酸酯
Phenol-d6 Solution 2000ug/ml in Methanol
Nitrobenzene-d5 Solution 2000ug/ml in Methanol
trans-Heptachlor epoxide Solution in Methanol
First Standard® 甲醇中溴苯腈辛酸酯溶液,1000μg/mL