Based on federal and state regulations for identifying and quantifying low levels of pesticides in food and environmental samples, we selected three capillary columns to screen for chlorinated pesticides. A nonpolar and two low/intermediate polarity phases were chosen to evaluate differences in component elution order and retention times. Low level screening analyses were performed effectively by using split/splitless injection and an electron capture detector (ECD). Each column separated the 18 pesticides in approximately 35 minutes. Example chromatograms are shown.