Agilent, 122-5032, J&W DB-5 GC Column, 30 m, 0.25 mm, 0.25 µm, 7 inch cage

Agilent J&W DB-5 is a low-polarity fused-silica capillary GC column with a 30 m length, 0.25 mm inner diameter and a 0.25 µm film. This conventional-bore, thin-film configuration supports efficient separations of many nonpolar and moderately volatile organic analytes in established gas chromatography methods. Its DB-5 stationary phase offers different selectivity from mid-polarity or wax-based phases, and the 7-inch cage fits common GC oven assemblies. The specified temperature range is −60 to 325/350 °C, depending on operating conditions. The 0.25 mm bore and thin film distinguish this format from wide-bore, thicker-film DB-5 columns and affect loading, retention and required carrier-gas settings. Leak-free installation and appropriate column conditioning are important when establishing baseline performance.