10mL headspace vial, 23x46mm, 20mm crimp finish. These 10mL headspace vials have a beveled top for tighter crimp sealing than regular flat top serum vials. Constructed using Kimble KG-33 low expansion clear borosilicate glass. The neck height of these 10mL headspace vials are taller than typical 10mL serum vials to facilitate handling by robotic arms in automated sampling and filling machines. Packaged in 10.5 x 8.5 x 3 inch trays of 100 pieces. Compare to National Scientific® Headspace Vial C4020-10 and Agilent® Headspace Vial 5182-0838. Headspace Vials Seals, Headspace Vials Stoppers, Headspace Vial Crimpers are all sold separately on this website (any 20mm style will work): See Also