Product Category
Vial with septum for clinical analysis
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chemical characteristics. 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through the center for easier needle penetration and to release the vacuum that forms when a large volume of sample is withdrawn from a vial. This septum provides chromatographic characteristics similar to that of a
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a vial septum and then installing the vial in the sample tray. I adjust the needle to the target depth, then lift the vial by its cap. In the case of my instrument, I expect approximately 1 mm of vertical play if the system is adjusted properly. This play allows a safety margin in case of any variation in vial depth for a given vial model. This
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vial is vented to atmosphere, re-equilibrated, and the next subsequent extraction performed. Between two consecutive extractions, the vial is being equilibrated on probe, that is, during this period, the sample probe remains in the vial after its first piercing of the vial septum to avoid leakage that could result from multiple piercing.
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Catalog number: TS-13028. For a convenient, versatile, and cost-effective vial and closure system, choose Thermo Scientific™ Screw Cap Septum Vials. Made of autoclavable borosilicate glass and available with a wide assortment of special closures and accessories, these vials are ideal for sample collection and small derivatization reactions
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Jan 2, 2006 · Figure 3 - Typical mass chromatogram of volatile residue in hexane caused by PTFE/silicone septa: a) hexane extract of a piece of septum; b) vial septum was punctured once by a syringe to sample 1 μL hexane for GC analysis; c) hexane in the last vial was reanalyzed after 3 days; and d) analyzed immediately after 100 μL hexane was added from one vial to another (the septum was punctured 10
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Jul 1, 2016 · Sample-vial septa must withstand multiple punctures during repeated syringe rinsing prior to injection, but there is no long-term requirement for a lasting seal. There are two remaining measures of vial septum performance: leakage and sample contamination. Vial septa can be made of softer and better sealing materials than inlet septa.
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vial septum for multiple uses. This provides a direct route for microorganisms to enter the vial and contaminate the fluid.” Both the Pfizer-BioNTech and Moderna COVID-19 Vaccines are preservative free. The use of vial adapters and dispensing pins cause concern for a variety of reasons: • Syringes will be filled with exact dose (e.g., 0.3
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Jun 9, 2022 · Coring, whether from the sample vial or the injection port septum, will result in an increased number of siloxanes that will manifest themselves as “ghost peaks” (5). Whether it is valve bleed, septum vial bleed, or GC inlet septum bleed, there will be late eluting compounds, with m/z 73 for many of them. Identifying the source of siloxanes
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Polypropylene 12 x 32 mm Screw Neck Vial, with Cap and Preslit PTFE/Silicone Septum, 700 µL Volume, 100/pk. Ensure all your solvents, solutions, and samples are stored safely within a chemically inert environment with the Polypropylene Screw Neck Vial, with Cap and Preslit PTFE/Silicone Septum. All Waters vials are produced and go through
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Type 1 borosilicate glass. Clear glass vials with 20mm crimp seal finish are designed to fit most headspace autosamplers. Flat bottom vials maximize heating efficiency when used with bottom. Round bottom vials are more easily handled by robotic arms that lift the vial from the tray. Round bottom vials distribute the internal pressure created at
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May 11, 2021 · Groups of 10 vials, with three microbial concentrations of both test microbes on the vial septum, were tested with the different needle sizes. This was a total of 60 vials per needle size, and an overall total of 180 vials. The septum needle insertion zone was penetrated by a needle, and the needle was submerged in the TSB to the same depth.
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For a convenient, versatile, and cost-effective vial and closure system, choose Thermo Scientific™ Screw Cap Septum Vials. Made of autoclavable borosilicate glass and available with a wide assortment of special closures and accessories, these vials are ideal for sample collection and small
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Septum Selection Guide 411 Madrid Avenue Torrance, CA 90501 Tel: 310-212-0555 Fax: 310-328-7768 www.phenomenex.com info@phenomenex.com Introduction Cap liners, also called vial septa, are selected according to the type of sample being analyzed. All vial septa contain small quantities of organic materials that might be detectable with the analytical
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1.5mL Polypropylene vial with septum cap for Dionex AS-50 and AS-AP Autosampler. The septum is slit for easy penetration The septum is a laminate of blue PTFE on the bottom and white silcone on the top. Related Products: 1.5ml Vials. Compare this item.
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The septum forms a barrier between your sample analyte in the vial and the outside atmosphere. This barrier protects your sample from external contamination while allowing a needle (from a manual or automatic syringe) to enter the vial, and extract the sample for the next stage of separation.
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