Standard Opening 10mm Sample Vial with Septa Suppliar. Oct 26, 2021 · Chrominex volatile organic analysis vials with screw cap-Voa Standard 40-mL glass screw-cap VOA vials with PTFE-lined silicone septa may be used for liquid matrices. Special 40-mL VOA vials for purge-and-trap of solid samples are described in Method 5035.