2021/5/8 · Thomas Scientific EPA VOA vials supplier Sigma 2ml vials with caps in amber for HPLC sampling price oem volatile organic analysis vials Thomas Scientific-Voa VOA Vials – Open Top Closures and Septum Generally used for volatile organic compound analysis and sample storage, our 20mL, 40mL, and 60mL VOA vials are available in clear or amber borosilicate glass with a choice of .125″ or .100