Pre-column for preconcentrating substances to be chromatographed, as well as device for a liquid chromatography system and coupling member for said device.

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 (3, 5) and has means (6) 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-columns (45, 46, 47), optionally one or more separating columns, and a coupling member (22), and to a coupling member (22) for said device.