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PCB No. 121|2,3′,4,5′,6-Pentachlorobiphenyl
格草净
啶虫脒(吡虫清,莫比朗) BePure-20021
1-Bromoundecane-1,1,2,2-d4 标准品
脂肪烃标准品套装,34个单独包装
氟啶脲
二氯百草枯-D8 BePure-24686
4-Biphenylcarboxylic acid (无证书)
Monomethyl phthalate-d4
Oxydemeton-methyl Solution 100ug/ml in Acetonitrile
SEM同位素(13C,15N2) BePure-25522