Crimp top headspace vials, Supelco®. Supplier: Sigma-Aldrich. Description: Chromatography vial, N/A, Headspace, Glass, Clear glass, flat top, round bottom, 20,00 ml, Ø×H: 22,5×75,5 mm. ,SIAL854181-UEA,SIAL27199EA,SIAL27299EA,SIAL27298EA,SIAL27294EA,SIAL27296EA,SIAL27297EA.