Sep 09, 2020 · The 10ml Headspace Glass Vial produced by Aijiren uses high-quality, extremely inert borosilicate glass. 18mm Screw Thread 10ml Headspace Glass Vial are all 5.0 type glass, the specification is 22.5*46mm, the bottom is round bottom, the thread design of the bottle mouth is very convenient for laboratory personnel to manually tighten or open.