Available in either Borosilicate glass (Type I available) or Autosampler Vial 2ml with Caps, HPLC Vial,9-425 Amber Vial with Blue Screw Caps,Writing Certified Vials, Caps, Septa, & Inserts - NET 33-Expansion clear glass (USP Type 1 borosilicate, Class A) and 51A-Expansion Certified PLUS (Cert+) 9 mm Screw-Top Vials and Caps with Bonded-In Septa.