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S-(2-Dimethylaminoethyl)isothiourea Dihydrochloride
GM-0.33A真空泵上膜片(密封板)
酱油基质中铅(Pb)质控样
Dionex AS19阴离子色谱柱
ERLENMEYER-FLASKS, 300 ML, ST 24/29, 87 X 150 MM ECONOMY PACK = 10 PCS
HYPERCARB 3UM 30X2.1MM COLUMN
125ml梨形分液漏斗,玻璃活塞
胰蛋白胨(酪蛋白胰酶消化物)(进口)
CAPCELL PAK C18 AQ (S-5) 2.0X150*
铬黑T指示剂