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洗耳球
二硫化碳中丙酮
6-氯-1-己炔
2 in 1 套装, 1.5ml 11 23 1098, 1000个/包装
地衣芽孢杆菌 ATCC11946
8种元素混标(Mg Mn-10ppm,Ca Cu Fe K Na Zn-100ppm)
CHROMATOGRAPY-COLUMNS, ST-SOCKET 14/23, VALVE AND PTFE-VALVE PLUG, SOLID PLUG, SCREW-THREAD RETAIN
SuperFlangeless Ferrule Tefzel Yellow
N-亚硝基-双-异-丙基胺,10ng/ul于甲醇 标准品
METHOD 1614 CALIBRATION SOLUTIONS (13C12, 99%) 标准品