sample storage vials EPA VOA vials for soil Perkin Elmer-Voa Vial Free sample 20ml screw headspace glass vials for analysis instrument Perkin Elmer Material: USP Type 1, Class A, 33 Borosilicate Glass Dimensions: 22.5 x 46mm/22.5 x 75mm Application: GC system Neck Diameter: 18mm Qty/Pack: 100pcs/pack Volume: 10