Ohio Valley offers GC Packed Columns in glass, metal, and PTFE. Several different stock metal GC packed columns are listed on our website. Custom GC packed columns are also available. Orders for custom-made columns will be given immediate attention and most will be shipped within 24 hours from receipt of order. Packed columns can be made with any combination of support and liquid phase listed on our website. Columns are supplied with brass fittings, unless otherwise listed.