Empty Glass GC Column, for PerkinElmer^® 115, 300, 900, 2000, and Sigma (Not On-Column)

气相色谱玻璃空柱,PerkinElmer^® 115,300,900,2000,Sigma,非柱头进样

带 PE 筛板的聚丙烯固相萃取空管，20μm 孔隙度, Empty polypropylene SPE Tube with PE frits, 20 μm porosity

EPA VOC校准标准品套装, EPA VOC Calibration Standards Kit

Ferrous Iron in Water-WP

Frit Cap Assembly for Supelco^® HPLC Column Hardware

适用于 Supelco^® HPLC 色谱柱的筛板

γ-DEX^TM 120

小型PUF卡夹, Glass Cartridge for Small PUF Plug

Glass Transfer Tube, Spray Chamber

Hibar^® 250-3

HPTLC Silica gel 60 NH₂ F₂₅₄s