Preface. Introduction: General Considerations. A Simplistic Approach. A Simplistic Approach. Simplistic Comparisons of Packed and Open Tubular Columns. A Simplified Theory of the Chromatographic Process. Separation of Components. Effect of Carrier Gas Velocity. References. The Open Tubular Column: General Considerations. The Tubing. Sources of Activity. Structural Flaws. Flexible Columns of Conventional Glasses. Silanol Deactivation. Column Coating. References. Sample Injection: General Considerations. Extra-Chromatographic Phenomena Influencing Band Length. Chromatographic Phenomena Influencing Band Length. Hot Vaporizing Injection Methods. Programmed Temperature Vaporizing Injector (PTV). On-Column Injection. Large Volume Injection. Purge and Trap Sampling. Selecting the Proper Injection Mode. References. The Stationary Phase: General Consideration. Stationary Phase Polarity and Selectivity. Polysiloxane Stationary Phases. Aryl Substituted Siloxanes.Bonded, Crosslinked, and/or Immobilized Stationary Phases. Polyethylene Glycol Stationary Phases. Enantiomer Separations. Other Special-Selectivity Stationary Phases. Gas-Solid Absorption Columns. References. Variables in the Gas Chromatographic Process: General Considerations. Volumetric Column Flow. Carrier Gas Viscosity. Comparing Calculated to Experimental Volumetric Flows. Volumetric Column Flow & Average Linear Velocity. Regulation of Gas Flow and Gas Velocity. Average Linear Velocity & Chromatographic Efficiency. Calculating Reliable Estimates A, B, and C. Theory & Practice. Choice of Carrier Gas. The Effect of Solute Retention Factors. The Effect of Column Length. The Effect of Column I.D. The Effect of Stationary Phase Film Thickness. The Effect of Stationary Phase Diffusivity. The Effects of Temperature. Optimum Practical Gas Velocity. Temperature Programmed Considerations. Column Flow Under Temperature Programmed Conditions.