Product Category
Chemical resistance of silicone septum
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Selecting the Correct Septa. It's vital to choose the right septa for your application. The wrong septa can compromise the accuracy of your results and reduce the lifespan of your supplies (increasing overall costs). The below chart shows some common septa materials along with their compatibilities, incompatibilities, and resealability.
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Nov 5, 2018 · Both PTFE and polyethylene have excellent chemical resistance to THF, but silicone has poor chemical resistance to THF. For an ELSD, RI or MS detector, PTFE or PE septa would be the recommendation.
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Materials commonly used for vials include glass, polypropylene and TPX. Materials commonly used for caps include polypropylene, low density and high density polyethylene, and urea resin. Materials commonly used for septa include PTFE, silicone, natural red rubber, butyl rubber, Viton, polypropylene and polyethylene.
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Stoppers can be made of glass, cork, rubber, or silicone. They are typically designed with a conical shape, but straight, flanged, and tapered options are also available. Stoppers are the preferred choice for many applications requiring a tighter seal or a greater degree of chemical resistance.
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A layer of PTFE is laminated to each side of high purity, medium durometer silicone to form a septum that is the most resistant to coring while maintaining good resealing characteristics. The PTFE/Silicone/PTFE septum is recommended for the most critical applications such as ultra trace
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Mar 31, 2022 · PTFE/Silicone/PTFE is the most coring-resistant septum with preserved resealing qualities. You get that when laminating a layer of 0.003″ PTFE to either side of high purity, medium durometer silicone. Use the T/S/T for the most demanding applications. For example, you can use it in applications such as: 1. ultra-trace analysis,
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Septa. 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
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background, low permeability, and the highest performance of any headspace septum . PTFE/Silicone septa provide excellent resealing characteristics and broad chemical compatibility . Gray PTFE/Molded Black Butyl Septa (Pharmafix Style): (C4020-36) C4020-36 is a molded septum featuring a PTFE-faced center surface that does not extend to the edges
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highest performance of any headspace septum. PTFE/Silicone septa provide excellent resealing characteristics and broad chemical compatibility. Gray PTFE/molded black butyl septa (Pharmafix style) C4020-36 is a molded septum featuring a PTFE-faced center surface that does not extend to the edges of the septum. The PTFE center
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The PTFE/Silicone septum will aid with multiple injections and sample storage due to the superior resealing capabilities. Until punctured, these vials have PTFE chemical resistance, and then the septum offers the chemical compatibility of silicone. This allows for a working temperature of -40 C to 200 C.
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Red PTFE/ White Silicon Septum; Fabricated from Synthetic Quartz Glass (190 nm - 2.5 µm) Enhanced Chemical Resistance Cuvette with a 3500 µL Capacity; Sold in Packs of 2; This Synthetic Quartz Glass Cuvette has two polished sides for use in absorption spectroscopy experiments and two frosted sides for handling.
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After piercing with a non-coring needle, rubber closes the puncture, protecting the contents of vessel or container from atmosphere. We also provide Suba-seal silicone rubber septa for high heat applications (up to 200 °C continuous) with improved chemical resistance compared to natural rubber and autoclavable for sterile uses.
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highest performance of any headspace septum. PTFE/Silicone septa provide excellent resealing
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Bottle Caps. Bottle caps provide an air-tight seal that ensures that a bottle’s contents are leak- and spill-proof, resistant to temperature and that the bottle can be moved. The most ubiquitous style is the threaded screw cap. Caps are available in different sizes and colors and can be specialized for the type of container they sit upon.
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Chemically resistant polyethylene septa are usually molded into single-piece caps. The surface for
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