Every Quadrex fused silica capillary column is pre-conditioned, QC tested, and shipped with a clear and easy to read Capillary Column Test Data Sheet. This gives you all of the pertinent information regarding the columns’ configuration, test operating conditions, and maximum programmed and isothermal operating temperature limits. Column efficiency, activity and film thickness are easily evaluated using an appropriately designed test mixture. We maintain a computer data base of all column data in order to assure you of column-to-column reproducibility.