Optimized for automation, Thermo Scientific™ Amber VOA Vials with Septa Cap feature a thinner septum that is easier to puncture, and is permanently bonded to the cap to prevent unseating from the sealing surface when punctured during analysis. Available Certified to meet EPA Performance Based Specifications for Volatile Organic Analysis, Processed the same way as the certified vials but without certification documentation, or Unprocessed and ready for your own cleaning procedure.