clear safety coated EPA VOA vials agent Chrominex-Voa Vial Feb 06, 202 · clear safety coated 40ml VOA vials for lab use China Manufacturer Volatile Organic Analysis (VOA Vials), Open 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