Catalog number: 31303211. Ensure optimal performance of your GC instrument with bleed and temperature optimized Aijiren Tech™ BTO and TR-Green Septa. Made of low-bleed silicone, these septa have excellent mechanical properties, are ideal for demanding GC-MS applications, and may be used reliably up to 400 °C. 48 (Blister Pk.)

GC Septa Three Layer GC Septa Three Layer Septa is made of preconditioned silicone rubber and is 3.81 mm (0.150 in) thick. The average life of these septa is up to 100 injections with a 26s gauge needle. The maximum operating temperature is 200° C. High Temperature GC Septa

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.

Once you’ve diagnosed the GC septum bleed source as the vial cap, the first step in resolving the issue is to make sure that the vial cap septum material is compatible with your injection solvent. While septum bleed is not excessive most of the time, when a solvent and vial cap septum are incompatible, extreme contamination can occur.

Features. The preferred septum for autosamplers. Pre-pierced for extended life and reduced coring. Ideal for overnight runs. Up to 400 injections per septum. Plasma coating eliminates sticking. Maximum injection port temperature 350 °C. Soft, 45 Durometer, easy on autosampler needles.

Best septa choice when temperatures are over 125°C. Natural PTFE/red silicone – ST3HT High temperature formulated seal with low bleed. Best septa choice when temperatures are up to 300°C. Blue silicone/red PTFE – ST144 Thin 1.4 mm seal with PTFE face. Resealing capability limited due to thinner silicone layer. Aluminum/white silicone – AS3

Aug 5, 2022 · General Purpose Blue Septa are suitable for most GC applications, they have a service life of up to 150 injections, and the maximum working temperature is 250 °C. They are produced in diameters

High-performance GC Septa for autosampler use Outstanding lifetime Very low bleed Maximum temperature of 350°C Septum typically achieves 400 injections without failure when used with HP-style needles and autosampler needle guide. Soft, 45 Durometer, septa are easy on. Related Products: Injection Septum.

injection methods. PTFE septa are rarely used for GC applications. Polyethylene (PE) Septa and Integral Molded Closures Chemically resistant polyethylene septa are usually molded into single-piece caps. The surface for needle penetration is 0.01" thick, allowing for use with most HPLC autosamplers. Polyethylene septa are not resealable and are

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.

Silver aluminum, PTFE/silicone septa 100/pk Silver aluminum, PTFE/butyl rubber septa 500/pk 5061-3370 Silver aluminum, clear PTFE/red rubber septa 1000/pk 5183-4498 Silver aluminum, PTFE/silicone/PTFE septa 1000/pk 5183-4499 Silver aluminum, PTFE/silicone septa 1000/pk 5183-4500 Crimp Caps Silver aluminum, black Viton septa 100/pk

Probably the number one problem with GC injection port septa is coring, which is when a hole is produced in the septum when it is punctured by a syringe needle. In addition to causing poor chromatography, or loss of sample from the injection port, coring can cause unwanted and unknown (ghost) peaks in the chromatogram.

1470-0669-L. 17mm Diameter SSP2122-GH, 3mm Thick, High Temp Precision Molded Red GC Septa with GUIDE HOLE, Ultra Low Bleed and Long Life. Jars of 25. 1470-0669-XXV. 9.5mm Diameter SSP2122, 3mm Thick, High Temp Precision Molded Red GC Septa with Ultra Low Bleed and Long Life. Jars of 100. 1460-0375-C.

Thermolite Plus septa are a proven low-bleed champion. With a maximum temperature of 350 °C, Thermolite Plus septa are suitable for most applications. BTO septa are bleed and temperature optimized with a maximum temperature of 400 °C, for the most demanding GC and GC-MS applications.

Septa replacement is one of our most common tasks when doing routine GC inlet maintenance on our gas chromatographs. Fortunately, it is also one of the easiest! In this example, we replace the septum in an Aijiren gas chromatograph. The steps may vary on a different instrument or configuration. Additional Resources