Alwsci ND11 Red PTFE Silicone Septa Crimp Caps for 1.5ml Crimp Bottle. High Chemical Resistance: PTFE septa forms an inert barrier between sample and carrier material. 3-Year Warranty: Comprehensive 3-year warranty coverage for product reliability. ISO & SGS Certified: ISO 9001:2015 certified with SGS approval for quality assurance. 24/7 Online Support: 24 hours online after-sales service for immediate assistance. Customizable Components: Cap material, type, diameter, and septa specs are customizable. Lab-Grade Cleanliness: Produced in a 100,000 grade cleaning room to avoid contamination. Wide Application Scope: Ideal for HPLC, GC, LC/MS, GC/MS, and MS/MS analyses. Fast Lead Time: Average lead time within 15 workdays for both peak and off seasons.