PRE-COLUMN FOR PRECONCENTRATING SUBSTANCES TO BE CHROMATOGRAPHED

摘要

The invention relates to a pre-column of pressure-resistant material for preconcentrating at elevated pressure substances to be chromatographed, which column consists of a vessel-shaped body which narrows internally towards the two ends and has means for sealing connections, upstream to an inlet tube for the liquid to be preconcentrated and downstream to a separating column. The invention also relates to a device for a liquid chromatography system, comprising one or more pre-colomns, optionally one or more separating columns, and a coupling member, and to a coupling member for said device.