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.

Long Life GC Autosampler Septa are designed for use with GC Autosamplers. The 5, 9, 11 and 11.5 mm diameter Long Life septa are available with our unique prepierced center depression which guides the syringe needle to the same injection point, extending septa life and reducing needle. Related Products: Injection Septum.

The bleed from either septum shows a similar pattern (Figure 1), but it is easy to determine the source with a simple test. Isolate the inlet by setting the instrument to perform a run without an injection. Perform an analysis; if the bleed disappears, then the vial cap septum was the source. Determining if the vial cap septum is the source of

Chromatography Troubleshooting Guides-Solid Phase Extractions Troubleshoot common GC issues Simply click the general GC symptom that you are observing, then navigate the symptom details to define potential causes of your problems and receive appropriate solutions to resolve the problem. Baseline related problems Quick links Baseline drifting

Inlet septa are used to maintain a leak-free seal under the septum nut in the GC inlet, even after many repeated injections. The dimple in the middle of the septum guides the syringe needle through the inlet into the inlet liner to minimize damage to the needle and to ensure injection consistency.

General Purpose Septa for GC Aijiren’s general-purpose septa are made from an enhanced injection-molded silicone rubber material. The septa material, dark red or gray in color, is specified to withstand over 200 automatic injections at an injection port temperature of 350 °C.

4 Inlet Septa for Gas Chromatography Advanced Green inlet septa eliminate sticking and reduce coring. 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.

Sep 1, 2005 · These septa have a hole in the middle, allowing easier access for the needle while maintaining the sealing characteristics. Clean the insert/liner and replace the insert in a timely fashion. Glass wool or the whole insert can be replaced; inserts can be cleaned in an ultrasonic bath or thrown away.

BTO® (Bleed and Temperature Optimized) red-orange septa are the most widely use Learn More. $101.13. AG3 low-bleed GC septa. The CRS Advanced Green 3 was specifically created to combine significantly longe Learn More. $93.11. Marathon long-life GC septa. Long injection life, pre-pierced for minimal coring. Maximum temperature 350 deg Learn More.

Chromatography Septa. Disks of various sizes and materials placed on top of injection ports of GC instruments to create a leak-free seal between the atmosphere and carrier gas and minimize contamination. Septa prevent significant coring or leaking during repeated sample injections. Material. Type.

Chromatography Supplies; Chromatography Septa; Chromatography Septa 1 – 30 1132 . Industries. Education; First Responders Globally Harmonized System ...

Molded Septa are manufactured from high quality, low bleed material that uses the same exclusive LB-2 rubber formulation chromatographers are accustomed to using. Design. With Injection Hole. Type. Septa. For Use With (Equipment) Low Bleed GC-MS Columns. Temperature (Metric) Max. 350°C.

GC Supplies & Consumables Inlet Septa for Gas Chromatography Merlin Microseal for GC The Merlin Microseal is a microvalve alternative to the conventional silicone rubber septa used in gas chromatography (GC). Its unique design gives it high pressure capability and resistance to wear.

Chromatography Supply for Chromatography GC Septa As an essential element of any GC system, we carry a wide selection of high quality septa for your laboratory applications. We offer Septa by Aijiren Technologies, Aijiren Tech, SGE and other leading manufacturers.

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