Home » News » Vials Septa » X pre-slit chromatography vial septa with caps UK Pre-slit Septa at Thomas Scientific Pre-slit Septa found in: 10-425 Septa, 10 mm Screw Top Black Cap with PTFE/Silicone Pre-slit Septa, 8-425 Septa, 13mm Septa For Screw Thread Vials, Open..