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2-Hydroxy-3,4-dimethoxybenzoic Acid
PLgel保护柱
HyperSep C8 SPE Column 2g/15mL 20个/包装
气接头
Guard-Disc直接柱套2(Waters型)
SEP.FUNNELS, CONICAL SHAPE, 250 ML, DURAN, W. WITAFLO- NEEDLE VALVE, BORE 3 MM, ST- PE-STOPPERS S
2-辛炔酸乙酯
3,5-二溴-4-羟基苯甲醛
BOTTLES, CONICAL SHOULDER, ST-GLASS- STOPPER 45/27, 500 ML, CLEAR GLASS
氢氧化钾溶液标准物质