Polysiloxanes are the most common stationary phases for general separations. They are relatively stable, robust and versatile to a wide range of applications. Different functional groups that substitute to the methyl group on the silicon atom characterize the polarity of polysiloxane. Carefully controlling the polymer synthesis, capillary tubing surface treatment and other manufacturing processes can control column characteristics, such as polarity, retention, efficiency and inertness, and replication of column performance with very small variation margins.
GS-Tek offers non-polar and mid-polar polysiloxane phase columns. GsBP-1 and GsBP-5 are examples of non-polar phases, GsBP-35MS, GsBP-50+MS, GsBP-1301, and GsBP-1701 are examples of mid-polar phases. Some examples of specially designed mid-polar phases for environmental applications are GsBP-624, GsBP-VMS and GsBP-XLB. GS-Tek offers a broad line of low bleed columns for GS-MSD, GC and other instrument applications.