gc headspace vials supplier → Gas Chromatography (GC) → Vials → Vials,20mL Headspace vial only,Screw Cap Style,75.5 x 22.5mm,clear glass,flat bottom,Vial Only,no caps or septa. Vial20mL Headspace vial only,Screw Cap Style,clear glass,flat bottom,Deminsions20mL,75.5 x 22.5mm,Package Size100/pk For use with AOC-5000 and AOC-6000.