Partisil™ HPLC Columns are a complete column and no extra end fitting kit is required. This column has the standard compression end fittings, WCS.
The Partisphere™ is a cartridge type HPLC column – and has unique void sealing hardware, WVS. All WVS cartridge columns are shipped without end fittings are require end fitting kit. The idea of a cartridge system is to have one or two sets of end fittings that are removable and can be used interchangeably on the cartridges as you install them on the instrument.