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2,2’,3,5,6-五氯联苯(PCB 93) 标准品
21种农药混标 BePure-30245a2XA
对苯二甲酸
Fluoranthene (13C6) Solution 100ug/ml in n-Nonane
1.1.2-Trichloroethane (13C2)
6-Acetyl-N-caboxylate Melatonin Ethyl Ester
Fluroxypyr-1-methylheptylester,10ng/ul 标准品
n-Octylphenol EO Kit (EO=0-3, Not including 3688.12)
熊胆粉
京大戟