9mm Blue Screw Cap with Bonded PTFE/Silicone Septa, Pre-Slit | 100-Pack

These premium 9mm blue screw caps feature a bonded PTFE/silicone septum designed for reliable autosampler performance in HPLC, GC, and LC-MS applications. The pre-slit configuration enables smooth needle penetration while minimizing coring and fragmentation, ensuring sample integrity and consistent chromatographic results across high-throughput analytical workflows.

• Septum Material: Bonded PTFE/silicone construction provides excellent chemical resistance and low bleed characteristics
• Pre-Slit Design: Facilitates easy needle insertion and reduces septum coring for cleaner injections
• Cap Size: 9mm diameter compatible with standard short-thread autosampler vials
• Color-Coded: Blue cap enables quick visual identification and sample organization
• Package Quantity: 100 caps per pack for cost-effective laboratory supply management
• SKU: 4400-04B