Shell vial. Snap cap vial. Snap ring vial / Crimp neck vial. Vial material. Amber glass, 1st hydrolytic class, glass/glass. Amber glass, 1st hydrolytic class glass. Amber glass, 1st hydrolytic class glass, silanized. Clear glass, 1st hydrolytic class, glass/glass. Clear glass, 1st hydrolytic class glass.