The Role of PTFE and Silicone Septa in Ensuring Reliable and Reproducible GC-MS Results

As the demand for trace analysis increases, and the number of laboratory problems caused by GC septa, choosing high-quality GC Septa becomes even more important. Choosing the right injection port septum for your GC is not as simple as picking up any supplier’s catalog, looking at the temperature range stated for the septum, and assuming that

Description. Thermo Scientific™ Septa for 8-425 Screw Thread Caps are constructed of PTFE, PTFE/rubber, or PTFE/silicone to suit a variety of HPLC, GC and IC applications. Choose from Thermo Scientific™, Thermo Scientific™ National™, and Thermo Scientific™ Chromacol™ brands. PTFE Disk septa are chemically inert.

The thin membrane allows for penetration by most normal gauge metal HPLC needles. PTFE septa are not resealable and should not be used with highly volatile solvents, short cycle times or multiple injection methods. PTFE septa are rarely used for GC applications. Polyethylene (PE) Septa and Integral Molded Closures

Autosampler vial septa, 13 mm for use with 13-425 threaded caps or 13 mm snap/crimp caps.Septa are available in a variety of materials and thicknesses. PTFE Natural Rubber are moderately priced seals for GC and HPLC with good chemical properties. They are ideal for multiple injections due to high resealability, but not as easy to penetrate as PTFE/RR. PTFE/High Performance Rubber is a highly

Butyl rubber/PTFE septa are used with ketones and acids, and where silicone-containing septa do not perform well. Both types of silicone and butyl rubber septa have a PTFE barrier layer which faces the sample,

With the 1.5mL 9mm Short Thread Vial ND9, researchers can store and analyze their samples with confidence, guaranteeing reliable and consistent laboratory work results. 1.Short screw Thread ND9 vials (11.6*32mm) for GC and HPLC. 2.Wide opening can effectively prevent the risk caused by the excursion of injection needle.

Our closures with septa are made in a wide variety of sizes and materials ensuring you have the right combination for your sample type and analysis temperature. Each product is manufactured using strict quality control standards resulting in consistent cap dimensions with septa which may be certified for higher purity grades.

A specially moulded seal with a PTFE insert. Sealing surface of Butyl and PTFE affects a more positive seal than non-PTFE-faced septa. Ideal choice for temperatures below 125°C. Good sealing characteristics, excellent resistance to most solvents with reduced coring and high puncture tolerance.

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. Blister packaging for cleanliness and convenience.

make PTFE/silicone septa suitable for all types of chromatographic applications. A thin film of PTFE is laminated to the side of the septum that faces the sample to limit exposure of the elastomer to the solvent. PTFE/Silicone septa are ideal for use in most HPLC and GC applications where resealability and purity are critical. Pre-slit PTFE

E-mail this product to a friend. Red PTFE/silicone septa. Recommended only for SIL-10A/AF/Ai/AP rinse port. For 4 mL vials 220-91521-08, -09, -10, and -11, use replacement caps and septa 220-91521-14. Price: $44.00 In stock.

Pre-slit PTFE/Silicone Septa: A PTFE/Silicone septum is provided with a thin 0.005” PTFE layer laminated to our high purity silicone and slit through the center to provide for easier needle penetration as well as to release the vacuum that forms when a large volume of sample is withdrawn from a vial. This septum provides chromatographic

All About Vial Crimpers: A Detailed 13mm & 20mm Guide Comprehensive Guide to Syringe Filters: Features, Selection, Price, and Usage HPLC Vial Inserts: Enhancing Precision and Sample Integrity Premium PTFE and Silicone Septa: Reliable Sealing Solutions Wholesale COD-V50 16mm 100mm cod tube for water analysis V945 Cheap 2ml 9mm amber HPLC vials for sale V935 Wholesale 2ml amber HPLC vials from

Mar 31, 2022 · PTFE/silicone septa. PTFE/Silicone is an ideal choice for analyzing volatile organic chemicals. These analyses happen at low concentrations or during operation at higher conditioning temperatures. Store PTFE/Silicone septa in a glass Purepak jar to ensure: 1. minimal background, 2. low permeability, 3. and the best performance of any headspace

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 Aijiren's complete portfolio of gas chromatography septa to ensure your GC is operating at peak performance.