A GC septum is located at the top of the injection port and serves two functions: 1) providing a leak-free seal to maintain carrier gas pressure inside the system 2) handling repeated puncturing by a syringe needle for sample introduction purposes without severe coring or leaking.

Bleed temperature optimized (BTO) inlet septa are preconditioned and ready to use with low-bleed, mass spec capillary columns. Our long-life septa are specially formed for extended use, meaning less downtime. Explore Agilent's complete portfolio of gas chromatography septa to ensure your GC is operating at peak performance.

Made from an enhanced injection-molded silicone rubber material, general purpose septa are used to maintain a leak-free seal under the septum nut in the GC inlet, even after many injections.

Hamilton’s gas chromatography (GC) septa are designed for high operating temperatures. Made from preconditioned PTFE or silicone rubber, these GC septum offer low bleed across repeated injections. Browse our GC septa products to see which is right for your applications.

Sep 27, 2012 · Gas Chromatograph (GC) injection port septa are a critical item in your GC system, but many of the associated problems are often misunderstood. This article will focus on different injection port septa, potential problems, and common fixes.

Long Life Septa for GC Agilent now treats each premium 11 mm inlet septa to eliminate sticking in the GC inlet. With our premium non-stick septa, you'll never have to scrape bits of septum out of your inlet.

Fortunately, it’s easy to determine which septum is causing the problem and by identifying it so you can avoid the time and trouble of unnecessary inlet maintenance. Read on to learn how to identify vial cap septum bleed and also how to choose a GC septum that will reduce the problem.

Handy tips for choosing the right septum for your application and instrument. Includes an overview of common GC septum problems including coring and bleed. Guidelines help you avoid extraneous peaks and optimize your system’s performance.

Sep 1, 2005 · A leaking septum is not only a source of septum particles, but will also cause discrimination and permit outside air to enter the system. Once air (oxygen and water) enters a GC system, oxidation and hydrolyzation reactions will start, leading to …

Nov 10, 2022 · This article describes how to replace the inlet septum for Split/Splitless and multimode inlets for all Agilent GC systems. Regular replacement of the septum can reduce small leaks in the inlet, allow for more reproducible chromatography, and protect the …