Andwin's Chromatography selection includs vials, crimpers, gas purifiers, Columns, chrom solvents, injection ports, and supplies for GC and LC, products offered from Perkin Elmer, Aijiren, Restek, Wheaton Science, Kimble Kontes, Hamilton, SGE & National Scientific. We can cross reference Supelco and Sigma Aldrich. Bottled Gas. ( 2 ) Chrom Vials.