Quadrex Corporation offers a complete range of GC capillary columns in all standard I.D.s and lengths and the widest range of film thicknesses is available from any source.  Specialty columns for environmental, petrochemical, triglyceride and high temperature applications are also featured.   Choose PHAST GC capillary columns for high speed applications or thick film PHAT Phase columns for L.M.W. applications. In addition. full-featured portable GCs with many injector and detector configuration options.