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标样-硫化物
直接黑38
2,2-双(3,4-二甲苯基)六氟丙烷
FILTER FLASKS, ERLENMEYER SHAPE, WITH SIDE TUBE, DURAN, NON-COATING, 1000 ML, 230X135 MM
Glass Column, OD:1/4, ID: 2.0mm, length: 6 feet, Porapak QS
CHROMATOGRAPHIC-COLUMNS, ST-SOCKET 29/32, ST-STOPCOCK, SOLID PLUG, SCREW-THREAD RETAINING NUT, FUS
LiChrosorb DIOL定做保护柱(10支)
PEEK连接件
4-二甲基氨基丁酸盐酸盐
CSK硅酸盐标准溶液Si:50.0ug atom/L(含3.05% NaCl)