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32种农药混标
0.1% Mg(NO3)2 in 1% HNO3(有证书)
β-紫罗兰酮 标准品
5-(Acetylamino)-5-deoxy-D-erythro-L-gluco-2-nonulopyranosonic Acid Methyl Ester 4,7,8,9-Tetraacetate
2-Isobutyl-3,5-dimethylpyrazine and 2-isobutyl-3,6-dimethylpyrazine, Isomer mixture
2,2‘,3,4,4‘,5,6‘-七氯联苯 标准品
First Standard® 3-氨基-2-噁唑烷酮-D4
己烯雌酚兽药纯度标准物质
氟菌唑
PUNYW26674464 Difenoconazole Impurity 2