Markes supplies a range of vials and caps to support users undertaking headspace (HS), solid-phase micro-extraction (SPME), thin-film SPME (TF-SPME) and HiSorb sorptive extraction sampling. Vials are available in 1.5, 10 and 20 mL sizes, with crimp-tops or screw-tops. Caps to suit sampling method (s) are provided with the appropriate septum.