Aug 20, 2021 · 0ml Crimp Top GC Vial Supplier--Aijiren Vials for HPLC/GC. Headspace crimp vials, the value have 6ml,0ml, 20ml clear and amber to choose, the bottom have flat,rounded and rounded-flat,etc. Match with crimp cap for GC analysis. 20mm Crimp GC Vials 20mm Aluminum Crimp Cap Seals and Vials ensure that a proper seal is made for this demanding