Clear VOA Glass Vials with 0.060in. Septa Clear vial designed for water sample collection for volatile organic analysis (VOA) Vial shoulder slope optimized to prevent air bubble entrapment; Available in the standard 40mL size; Open-top white polypropylene cap bonded with 0.060in. thin PTFE-lined silicone septum; Septum permanently bonded to the cap for secure sealing