Sep 23, 2019 Screw, Crimp and Snap top vials with caps and septa are all available. breakage *40% larger opening than standard narrow opening vials recommended konik autosampler vials 7 x 40 mm Crimp Top Vials – 0.8 mL and 0.7 mL Capacity Completely pre-assembled with PTFE/ Silicone seal and open-hole screw cap.