Wheaton EPA VOA vials agent transparent EPA VOA vials supplier Wheaton-Lab Consumables 8/7/2021 · Volatile Organic Analysis (VOA Vials), Solid Top Closures, 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 Solid Top PTFE-lined