Agilent, 5183-4757-100, Inlet septa, bleed and temperature optimized (BTO), non-stick, 11 mm

Agilent bleed- and temperature-optimized (BTO) septa are replacement injection-port seals for gas chromatography and GC/MS instruments. Their non-stick silicone construction is designed to reduce septum bleed and support repeatable syringe access during sample injection. Each septum measures 11 mm in diameter and is compatible with designated Agilent split/splitless, programmable temperature vaporizer, and multimode injection inlets. Preconditioning enables immediate use while the 400 °C maximum inlet temperature makes these seals suitable for demanding high-temperature GC workflows. Regular septum changes help maintain injection-port tightness and reduce background artifacts associated with worn inlet seals. The 100-piece package supports laboratories with frequent sample injections or several instruments sharing the same inlet consumable. This configuration differs from the 50-piece version in the number of septa supplied rather than their intended BTO sealing function.