Altmann Analytik HPLC-Vorsäulenkartuschen Stability Polyamin, 3,0 μm, 4,6 x 20 mm, 5 St/Pkg

Precolumns offer the advantage that they also retain molecules which would enter into an irreversible bond with the column material. Both filters and precolumns should be replaced regularly. A good indication of the time of the exchange is a gradual increase in the back pressure.