Agilent J&W GC Columns are designed and manufactured to offer quality and reproducibility, from the most benign to the most difficult types of samples. With the lowest bleed levels, the best inertness for acids/bases/mixed functional compounds, and the tightest column-to-column reproducibility, Agilent GC columns are of higher quality and perform better than any other columns on the market. Agilent offers both capillary and packed columns to suit your needs. Visit the custom columns shop to explore your options.