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trans-肉桂醇 标准品
甲草胺农药纯度标准物质
倍硫磷 BePure-22861
First Standard® 苯酰菌胺
Germanium - Ge metal, 99.999%, 5% Oxalic Acid
电导率111800Microsiemens/cm 25°C 标准品
4.4'-Difluorobiphenyl Solution 2000ug/ml in Methanol
内吸磷
十氟三苯基磷 标准品
Acetyl 2-Deoxy-2-phthalimido-4-deoxy-3,6-di-O-acetyl-β-D-glucopyranoside