This item: Autosampler Vials 2mL, HPLC/GC Sample Vials, with Writing Area and Graduations, 9-425 Screw Cap, Blue PTFE & White Silicone Pre-Slit Septa, 100 PCS $21.99 ($0.22/Count) In Stock. Material: USP Type 1, Class A, 33 Borosilicate Glass Application: Water analysis Qty/Pack: 25pcs/pack or 100pcs/pack Dimensions: 16 x 100mm Neck Diameter: 16mm