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吸收管采样箱
DB-624
3-氨基-N-乙基咔唑
D -色氨酸苄酯盐酸盐
扣瓶Wide Opening 2mL 透明玻璃 1000个/包装
VOLUMETRIC FLASKS, MADE OF PP, NARROW NECK, WITH RINGMARK, ST-STOPPER 19, 250 ML, H 235 MM
BOD培养箱
Wheaton 1000ml溶剂瓶,含PTFE隔垫
HyperSep C8 SPE Column, 500mg/6mL 30个/包装
LC-WCX SPE小柱,3ML /500mg,支