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5-氨基-2-萘酚
SUCTION TUBE, WITH NEEDLE VALVE STOPCOCK, BENT, WITH RD THREAD HOSE CONNECTION CONE ST 14/23
标样-四氯乙烯中油烟(适用国标:HJ1077-2019固定污染源废气-油烟和油雾的测定-红外分光光度法)
FILTER PAPER CIRCLES, MEDIUM SPEED, MEDIUM SOFT, RAPID, FILTER D. 90 MM, IN BAGS á 100 PCS
棕色小口试剂瓶
CENTRIFUGE TUBES, 25 ML, ROUND BOTTOM, GRADUATED, HEAVY WALL, WITH SCREW CAP, O.D. 24 MM, LENGTH 9
2,4-二氯-alfa-甲基苯甲醇
NOT LONGER AVAILABLE !
15X45 套装 样品瓶 瓶盖
气相色谱柱,TG-BOND S 30m x 0.32mm x 10μm