20ml Crimp Headspace Vials For Shimadzu 20mm Crimp - Alibaba. Product Name. 10ml gas Chromatography vial for Shimadzu ; Crimp Vial Material. Borosilicate glass, type I ; Vial cap Material. PP/PTFE ; Crimp Vial size. 22.5*46mm. Emerald Headspace Vials Crimp-Top, 20mL, Flat Bottom, Clear, 100pk