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分流衬管(ThermoQuest 8000 and TRACE),5mm I.D.,5个/包
DB-225气相毛细管柱
生活饮用水基质中亚硝酸盐氮质控样
2,2,5,5-四甲基-3-吡咯烷羧酰胺
SEAL, PTFE-PROTECTED, GL 14
N,N-二甲基-1,4-苯二胺二盐酸盐, 99% 25GR
水质总铬标样
2,5-二氯苯肼盐酸盐
9种元素ICP-MS混标,溶于10 % Aqua Regia(Mid / QC Standard Concentrate)
SEPARATORY FUNNEL, 1000 ML, CONICAL, GRAD., BOROS. GLASS, SOLID ST-STOPCOCK PLUG, BORE 6.3 MM, S