Product Category
The Role of PTFE and Silicone Septa in Quality Control Laboratories
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Silicone rubber septa. High quality, silicone rubber laminated to PTFE. Use when excellent resealing qualities are a must. Septum resists coring and is recommended when multiple injections are required. Preferred septa for use in liquid chromatography applications.
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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
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Septum Selection Guide Septa for use with general chromatography vials PTFE/Red Rubber Septa: (PTFE/RR) PTFE/Red Rubber septa are the most popular and economical choice for general gas chromatography applications. These septa are used primarily for routine analysis in gas chromatography with FID, TCD and FPD detectors.
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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.
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Septa, PTFE/Silicone, tan PTFE/silicone septum, septum diam. × total thickness × PTFE thickness 18 mm × 0.060 in. × 2 mil, pkg of 144 ea Expand View Pricing
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Description. Chromatography septas can be pre-slit. A pre-slit septum is an ideal choice in applications requiring 20% or more of the sample injection each time from the vial so that suction is avoided. The slit allows ambient gas to equalize the gas in the vial so that a vacuum is not created in the vial from the tight seal around the needle.
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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
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100pcs Lab Screw Thread Silver Caps PTFE/Silicone Septum for . 500pcs 10ml Sample Vials 20mm Crimp Top Bevelled Round Bottom Headspace Bottle. 100pcs Sample Vial Insert Glass Tube Micro HPLC Analytical 8-425/9-425 Screw Evaluation of Septa Quality for Automatic SPME–GC–MS Trace . Septa are typically made of butyl rubber or silicone.
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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.
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Ideal for use with open-top caps to access container contents with a syringe.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
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Sep 28, 2015 · The septa are formed from 2 layers. The PTFE is on the lower side that faces your sample in the vial and is relatively inert to solvents. The top side is red coloured rubber or a silicone that helps to make the seal with the cap on crimping. In general the Rubber/PTFE septum is fine for general use for 1 or 2 injections within a short space of
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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.
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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,
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Sep 12, 2022 · PRF.S1103.002 100pcs/pk18mmPTFE/Silicone Septa 180°C180°C180°C180°C180°C180°C180°C 1.5 mm PTFE Silicone For ND20 Caps Product no. Size Septa Material Septa Thickness Packing Natural
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PTFE silicone/ PTFE Thin, fragile needle? Soft and thin septa required e.g. silicone/ PTFE Blunt, thick needle? Slit/pre- cut liner as penetration aid (HPLC) silicone/ PTFE, slit Critical analysis? Very clean liner required
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