HPLC Vials – Logro Scientific. Sep 23, 2019 · *Compatible with 12x32mm 8mm screw cap vials *Both Pre-slit and No pre-slit septa are available *PTFE/Silicone/PTFE septa are autoclavable and offer excellent resistance to coring *Pre-assembled caps save you time and reduce contamination. 9mm Screw Top Vials: 9mm screw thread vials have a 9-425 GPI thread and the closure is dimensionally