GC columns

GC columns are the separation element inside a gas chromatograph, a length of fused silica or metal tubing whose inner wall carries a stationary phase that resolves a vaporised sample into its component compounds as a carrier gas sweeps it through. The Questpair catalogue lists 162 of them from 10 verified suppliers and distributors across 9 countries. New, used and refurbished columns are listed, and 92 percent of the listings are used. Prices run from EUR 32 to EUR 25.827. The range covers everything from a short replacement capillary to a complete column set paired with its instrument, which is why the spread in gas chromatography hardware is this wide.