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甲派啶(缩节胺,助壮素)
3种多氯联苯混标2 (HJ 350-2007)
磺胺甲基噁唑 试剂,可提供COA报告
Washington & Oregon NWTPH-HCID Retention Time Standards Mixture (repkg) 2500ug/ml in Methylene chlor
GPC标样-聚丙烯酸钠(Mw 270000)(宽,100%水溶粉末) 标准品
HUMAN LACTATE DEHYDROGENASE ISOENZYME 1 (catalytic concentration) 标准品
甲醇中3种酮类混标
琥珀酰磺胺噻唑
二氢黄樟素
1.2-Pyridylazo-2-naphthol (无证书)