Waters Guard Column Holder Sentry 2.1 mm

The Waters WAT097958 Guard Column Holder is an essential accessory used in High-Performance Liquid Chromatography to connect and secure a Sentry guard column directly ahead of the analytical column. The guard column system, which includes this holder, is critical for protecting the much more expensive and sensitive analytical column. The "2.1 mm" designation means this holder is sized precisely for guard columns and analytical columns that have an internal diameter (I.D.) of 2.1 mm.