EquipNet is the leading global provider of preowned equipment including used columns and more. Our exclusive contracts with our clients yield a wide range of used columns from a number of respected OEMs, including Millipore, Amersham Biosciences, Bio Rad, Amicon, BioSepra, Biotage, and many others. We are constantly receiving used columns in a range of models and sizes including glass lined columns and much more. If you do not see the used columns you are looking for, call one of our representatives and we'll find it for you. We can also source the right tooling and change parts that you need through our huge network of corporate clients from around the globe.