Cole-Parmer Certified VOA Vials. Zoom Image. 65872. Environmental Express. Borosilicate glass vials meet EPA guidelines for contamination-free containers. Choose between 20-, 40-, and 60-mL capacities. Select standard screw-top or open-top septa caps. Screw-top caps feature either PTFE or septa liner. Level 1 VOA vials meet EPA recommended