This Kit, 4104 is an economical way to purchase 5 Cogent HPLC Columns that are often used for Method Development and Scouting. Each Column has a 4.6mm Internal Diameter and is 100mm Long, packed with 4um particles, 100A pore size and are manufactured with Cogent TYPE-C™ Silica Hydride. This kit includes Cogent Diamond Hydride™, Cogent Bidentate C18™, Cogent Bidentate C8™, Cogent Silica-C™, Cogent UDC-Cholesterol™.