Sigma clear precleaned EPA glass vials for lab use Vial, Precleaned Glass, 40 mL, with cap, pk/5 | Hach VOA / EPA vials for water testing Vial, Precleaned Glass, 40 mL, with cap, pk/5 Order Status Contact Us Login Express Order Cart 0 / Quote Capped clear glass vial precleaned to USEPA standards for volatile organics analyses. 40 mL size is