Chrominex screw top headspace gas chromatography with high quality-Headspace Vials 0ml Amber Glass Headspace Vials for Aijiren. 0ml,22.5ⅹ46mm,20ml,22.5ⅹ75mm, DM8. Material: USP, Borosilicate Glass. Box packaged tpo minimize sample bottle damage. Manufactured under strict quality, which ensur