Rubber septa. Used primarily for routine analysis in gas chromatography. Offers moderate ability to reseal and good chemical inertness. Not recommended for multiple injections or holding samples for further analysis. PTFE is protective layer that once broken exposes rubber to chemical attack.
Vials, open-top screw cap, 2 mL large opening with closures, unassembled convenience packs 29118-U volume 2 mL, clear glass vial, thread for 10-425, black polypropylene cap, PTFE/silicone septa, pkg of × 100 ea
A PTFE/Silicone with a slitted septum allows for easier needle penetration as well as to release the vacuum that forms when a large volume of sample is withdrawn from a vial.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 characteristics similar to that of a septum without a slit except that the ability to withstand exposure to aggressive solvents is
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
describe a 12mm x 32mm vial as having a volume of 1.5 mL, 1.8 mL, or 2 mL. Clear glass and amber glass offer essentially the same inertness. Amber glass protects sensitive samples from exposure to UV light. The marking spot available on many vials provides a convenient place for sample identification information. Vials
Description. PAL System Screw Cap 10CV and 20CV, designed for the PAL Autosampler. ND18 Magnetic, Silver, Silicone white/PTFE blue Septa 1.5mm, Pk of 100 pcs. Manufacturer Part #:Cap-ND18-St-SP15-100. VICA Part Type.
Mar 31, 2022 · PTFE disk septa. A solid disk 0.010″ thick, our PTFE stands better than the most aggressive solvents. At least when it comes to chemical inertness. Most standard gauge metal HPLC needles can penetrate the thin membrane. Do not use PTFE septa with the following because you can’t release PTFE septa: 1. volatile solvents, 2. fast cycle periods,
Vials, screw top with black polypropylene hole cap (10-425 thread), large opening, pre-assembled volume 2 mL, amber glass vial, red PTFE/silicone septum, pkg of 100 ea; find Supelco-27532 MSDS, related peer-reviewed papers, technical documents, similar products & more at Sigma-Aldrich
The septum is provided with a thin 0.005” PTFE layer laminated to highly pure silicone, and slit through the center for easier needle penetration and to release the vacuum that forms when a large volume of sample is withdrawn from a vial.
Select Level 3 products for ultimate performance and sensitivity from your methods, while maintaining the highest levels of sample security and integrity. Choose from a variety of kits containing short thread screw vials with marking spots in clear or amber glass and polypropylene caps with silicone/PTFE septa designed to reduce autosampler
Recommended for thin gauged septa and large volume- or gas injections. Anatomy of a GC ALS Syringe Barrel Flange Needle Termination Fixed needle syringes (shown) Typically abbreviated FN Needle “cemented” to barrel using epoxy
I-Chem. Certified to contain <50 ppb Total Organic Carbon Standard 40 mL septa vial is clear borosilicate glass with 0.125 in. thick, I-CHEM blue, PTFE/silicone septa in an open-top 24-414 polypropylene cap. The I-CHEM molded-in septa retainer ring holds the septa securely in place without.
PTFE chemical resistance until punctured, then the septum will have the chemical compatibility of silicone Working temperature range from -40 ˚C to 200 ˚C Pre-slit PTFE/Silicone Provides adequate venting to prevent vacuum formation in sample vial, delivering excellent sample-draw reproducibility Eliminates coring from bottom draw needles
27261-U. black polypropylene hole cap, thread for 8-425, PTFE/silicone, Top Hat (septa and closure designed to fit together tightly), for use with 2 mL vial, 4.6 mm opening, pkg of 100 ea. View Pricing.
Accessory Product Data Sheet Septum Selection Guide 411 Madrid Avenue Torrance, CA 90501 Tel: 310-212-0555 Fax: 310-328-7768 www.phenomenex.com