EquipNet is the world's leading provider of used columns and various other preowned equipment. Our exclusive contracts with our clients yield a wide range of used columns from a number of respected OEMs, including Amersham Biosciences, Septech, Millipore, Perkin Elmer, and many others. EquipNet is constantly receiving used columns of various makes and models. If you do not see the used columns you are looking for, call one of our representatives and we will 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.