Phenomenex UHPLC, HPLC, SPE, GC - Leader in Analytical . Phenomenex is a global manufacturer of UHPLC, HPLC Columns, GC Columns, sample preparation products and chromatography accessories and consumables. DX Nylon Filter Vial, 0.22um, 100/pk - Filtrous. DX Nylon Filter Vial, 0.22um, 100/pk. Part Number: FVS-A2-0020. List Price: Was: Price Now. $185.00.