Inert guard column/retention gap used to extend the life of analytical columns when working with heavy matrix samples.

• Engineered for improved inertness for trace level active compounds
• For guard columns, retention gaps, restrictors, and transfer lines
• Particularly useful for for semivolatiles, pesticides, and drugs of abuse applications in heavy sample matrices such as soil, sludge, food, and body fluids
• Use as guard column to extend life of analytical column
• Available in a wide variety of inner diameters in lengths up to 30 meters
• Batch tested
• Superior replacement for: Siltek, RXI, and Z-guard deactivated tubing

Ultimate Plus Deactivated Fused Silica tubing can be used as guard columns, retention gaps, transfer lines, or restrictors to improve GC flow path performance. It is engineered for optimum inertness and peak shape performance with active trace level compounds, for analysts in environmental, food safety, and forensic labs running heavy matrix samples. For optimum system performance, use Ultimate Plus Deactivated Fused Silica with Ultra Inert GC columns, Ultra Inert liners, and Ultra Inert gold seals. Ensure leak-free GC connections with Ultra Inert treated press fit unions or Ultimate Unions and flexible metal ferrules.