Home » Instruments and Tools » LC Cartridges and Frits LC Cartridges and Frits LC Cartridges and Frits available from Chromatographyshop This website page is currently rebuilt. Please send your request by Contact Page to us. We will respond immediately. Column Adapter to connect 2 columns Select options Endplate with Frit and Seal Select options Frits with Ring for Prep Columns , 2 um Pore width Select options