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ProElut AL-A 500mg / 6mL 30/pk
甲醇中邻-二甲苯成分分析标准物质(邻二甲苯)
COMBI-CONNECTING TUBES, PE, FOR TUBING I.D.11-14 MM, STRAIGHT CONNECTABLE
Fitting with ferrule, ID=3,2mm, PTFE
DESICCATOR LIDS WITH SCREW THREAD JUNCTION, DURAN
气相色谱柱,TG-1701MS 15m x 0.53mm x 1μm
EPA 8270 Acid Surrogate Mix, 10,000 mg/L (RM, ISO GUIDE 34)标准品
ACRODIS GHP PP 针式滤器
4-氯-3-氟吡啶
四水合草酸铥,99.9%