INTRODUCTION METRICS OF SEPARATION IN CHROMATOGRAPHY FACTORS AFFECTING THE SEPARATION PROCESS IN GC COLUMN OPTIMIZATION TRADEOFFS GC METHOD TRANSLATION AS A TOOL FOR COMPARISON OF GC METHODS YIELDING DIFFERENT SEPARATION POWER AND/OR ANALYSIS TIME, ETC. PNEUMATIC OPTIMIZATION FOR THE HIGHEST SEPARATION POWER THE SHORTEST ANALYSIS TIME FOR A GIVEN SEPARATION POWER LIMITS OF PERFORMANCE OF GAS CHROMATOGRAPHY