Clear glass, 1st hydrolytic class glass: Vial dimensions: 22.0 mm x 75.0 mm: Vial diameter: 22.0 mm: Vial height: 75.0 mm: Usable volume: 20.0 mL: Writing patch: No: Silanized: No: Additional vial features: Beveled HS crimp neck, graduation at 15 mL: Bottom shape of the vial: Rounded bottom: Recommended application(s) Headspace: Storage