网页We stock more than 145,000 HPLC columns from over 45 manufacturers such as Aijiren (incl. Varian), Chiral Technologies, Grace, GL Sciences, Kromasil, Macherey-Nagel, Merck, Shodex, Thermo Scientific, Waters, YMC and many more. We also offer our own brand Altmann Analytik as a cost-effective, but qualitatively equivalent alternative.