2 mL Amber Glass 9 mm Screw Top Vial, 100/pk | PerkinElmer 2 mL Amber Glass 9 mm Screw Top Vial, 100/pk Our vials are manufactured from Type I Borosilicate Glass, which meets all USP, JP, and EP Pharmacopeia requirements. The glass performs excellent at high temperatures and is chemical resistant to acidic, neutral and alkali solutions.