Home » News » Vials Septa » I pre-slit chromatography vial septa manufacturer 8mm Autosampler Vial Septa - Thermo Fisher Pre-slit septa are easier to pierce with thin gauge needles Limited warranty period: Subject to all warranty requirements and exclusions set out in our Terms and Conditions of Sale, this product is warranted from the date we ship the product and for ninety (90) days