EPA/VOA Vials - Class 2 Pre-Cleaned 40mL Clear, Black Polypropylene 24-400mm Open Top Closure, 0.125" PTFE/Silicone Top Hat™ Septa (Pre-cleaned) Containers are processed according to E.P.A. recommended wash procedures - Washed with laboratory-grade biodegradable, non-phosphate detergent; Rinsed with ASTM Type I De-ionized water; Oven dried; and Assembled in