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Method 508 - Chlorinated Pesticides by GC/ECD 标准品
PUNYW27545254 Ammonium Iron (III) Citrate
泼尼松
PUNYW24714569 Mezlocillin Impurity 2 (Mixture of Diastereomers)
Isoprocarb Solution 100ug/ml in Acetonitrile
校准/ 窗口界定烃标准品(C8-C40偶数) 标准品
丙酮中西维因(甲萘威)溶液标准样品
大肠菌群定量标准物质
PAHs6组份-苯并(b)荧蒽,苯并(k)荧蒽,苯并(g,h,i)?,苯并(a)芘,芴,茚并(1,2,3,c,d)芘
Aluminum Oxide (-40 mesh) (Al) 99.999%(有证书)