24mm volatile organic analysis vials-Lab Consumables Supplier. VOA Vials are most commonly used for Volatile Organic Compound Analysis. These Vials are Type 1 Borosilicate glass available in Clear and Amber.Vials come with a choice of 1pc 24-414 white cap and sonically bonded septum. Waters TOC/VOC EPA vials for soil-Voa Vial Supplier