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N-苯基-p-苯二胺 标准品
CHROMATOGRAPHIC-COLUMNS W. RESERVOIR 250 ML, SOCKET ST 29/32, ST-PTFE-STOPCOCK SOLID PLUG, 20 X 20
2-氨基-6-甲基苯甲酸
磁力搅拌子,PTFE,直径30 mm,高6mm, 碟新
AQUASIL C18 5UM 30X2.1MM COLUMN
WATCH GLASSES, ? 125 mm
5,7-二羟基黄酮
250A精密型酸度计
Female Luer - Female Union
p-Isothiocyanatobenzoic Acid