Converted from Type I, 33 expansion borosilicate glass tubing.
Beveled edge finish features a sturdy rim that presses into the septum for a more effective seal
Flat or modified top style
Round bottom vials distribute the internal pressure created at high temperatures across the glass surface and are more easily handled by robotic arms that lift the vial from the tray
Uniform wall thickness for even heat distribution
Flat top vials have traditional flat finish on top and bottom to maximize heating efficiency