All GC capillary columns are produced from fused silica. Our tubing can withstand temperatures of over 425C. However, the polyimide coating and liquid phase are what limits the high temperature end of the column. Our deactivated tubing is excellent to use as guard columns or retention gap columns.
All OV columns are bonded and cross linked. We condition each column to achieve excellent thermal stability. We use conditioning techniques that give excellent thermal stability and allow a long lifetime for the column.