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through the center for easier needle penetration and to release the vacuum that forms when a large volume of sample is withdrawn from a vial.
Polypropylene 12 x 32 mm Screw Neck Vial, with Cap and PTFE/Silicone Septum, 300 µL Volume, 100/pk. Opt for the use of the Polypropylene 12 x 32 mm Screw Neck Vial in your lab. The vial is clean polypropylene-molded and is ideally suited in applications where there is a concern that the compound or molecule may stick to a polar glass surface.
Chemglass. Replacement septa for use with MW-102 open-top screw caps on Minum-Ware® glassware components. Septa are made of silicone rubber with one side having a RED PTFE face, while the opposite side has an ultrathin covering of polypropylene to prevent needle coring when penetrating septa. Compare this item.
Add the Clear Glass 12 x 32 mm Screw Neck Max Recovery Vial to your lab equipment collection so you may easily be able to store your analytes, samples, and solutions while you await the analysis results or even before conducting the analysis. The vial is designed for use in chromatographic analysis and specially made using chemically inert glass.
B 9-425 Compatible Screw Vial. High recovery vial Autosampling vial Sample vial. PRF.V0204.019 Clear glass 1.5ml Flat base high recovery vial 12mm x 32mm. PRF.V0204.026 Amber glass 1.5ml Flat base high recovery vial 12mm x 32mm. – Amber – White. PRF.V0204.001 12mm x 32mm.
Sep 1, 2005 · Figure 2 - Septum degradation (seen as ghost peaks). Following is a simple test that can be performed in the laboratory: Keep the column cold (30 °C) for 15 min, perform a blank run (no injection—only a temperature program up to 300 °C), and observe the baseline. After that run, cool the column to 30 °C again, keep it at 30 °C for 60 min
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
Silicone septa mat for capillary sequencing of 96-well PCR plates. Mat forms a tight seal on wells but is easily accessible through septa in each well. Ideal for work on ABI multi-capillary sequencing instruments.VWR offers microplate sealing films and foils for the reduction of evaporation in cell growth, PCR, and ELISA. Choose films of polyester for general incubation, polypropylene for heat
Jul 2, 2013 · Repeat steps 4 and 5 for flask 2. Purge the syringe by inserting the needle through the septum of the solvent flask and into the headspace of the flask. Draw up the inert atmosphere into the syringe. Remove the needle from the flask and expel the gas from the syringe (Fig. 14, D). Repeat 3–4 times.
Natural color PTFE laminated to clear silicone Extremely clean
Siliconization involves applying a silicone solution to the surface of the glass to create a protective layer. The benefits of silicone vials include: Minimal interaction between the sample and the vial. Prevents high-viscosity fluids from sticking to the internal surface of the vial. Increases transparency.
Silicone septa, 13 mm for screw top waste and wash vials.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 pure synthetic red rubber septum
Jan 2, 2006 · When the needle pierces the septum, the rubber is exposed to the sample by either headspace or direct contact, which will affect the quality of the data in various ways. This application note discusses the influences of pierced PTFE/silicone septa in GC-MS experiments. Two examples are given: the loss of nonpolar volatile organic compounds
Add the LCGC Certified Amber Glass 12 x 32 mm Screw Neck Vial, with Cap and PTFE/Silicone Septum to your collection of lab equipment so you may safely store and secure any photo-sensitive materials. The vial is amber-colored to prevent any sensitive samples from deteriorating. Its tight structure offers a secure fit to the analytical equipment.
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Caps & Closures. Liners & Septa. Used in combination with screw cap or aluminum seals. Septa selection that allows easy access to the contents with a syringe. Available in a variety of sizes and materials. Replacement liners are available that provide good chemical resistance.
