Scroll down to purchase! Headspace gas chromatography requires headspace vials and caps because they can withstand the pressure from the gas. Chrom Tech has a wide selection of high-quality crimp and screw thread headspace vials available in clear or amber glass with associated 18-and 20-mm headspace closures. Our headspace vials can be ordered
Vial was sealed using septa and cap with crimper. All analytes in the sample matrix followed a linear graph with ... 1. Islek D, Ramadanoglu S. Headspace-gas chromatography/mass spectrometry ...
GC and LC experiments can impact the septa integrity. Use our Chemical Resistance and Septa Solvent Compatibility Sections for more details Contents Choosing the right septa chart 2 Septa selection guide Septa material: General Chromatography vials 3 Septa material: 20 mm headspace septa 4 Temperature stability chart 4 Seal properties 5
Most vial cap septa are lined with a protective layer of polytetrafluoroethylene (PTFE) to prevent solvent attack. As shown in Figure 3, PTFE effectively prevents septum breakdown due to solvent exposure. In comparison, unlined vial cap septa exhibit bleed after just 24 hours at room temperature.
Browse our Gas Chromatography (GC) units, columns, consumables, and accessories for your analytical GC applications to achieve high performance, maximum productivity, and superior detection sensitivity. HPLC Buffers. The selection of a buffer in terms of species, ionic strength and pH range is critical in reversed-phase chromatography.
2021 - 10 - 25. Headspace Vials, Caps & Septa Headspace Vials are made of high quality of glass and have a thicker glass wall to withstand higher temperature and internal pressure for the analysis of volatile gas in the vial’s headspace. 20mm Crimp Top and 18mm Screw Neck Headspace Vials are available in clear or amber glass in 10mL and 20mL.
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Headspace vial caps are available in a variety of materials including aluminum, bimetal, and steel; headspace vial cap septa are available in PTFE/silicone, molded PTFE/butyl, and high-temperature varieties. Our headspace vial caps come in either 11 mm, 18 mm, 20 mm or 22 mm sizes. Most used headspace vial caps are crimp cap style.
Certified 40 mL screw top vials with 24 mm cap closures. 0.2 and 2 mL screw top vial-cap kits; includes SureStop vials with AVCS caps. Includes innovative vial-cap technology to ensures proper screw cap seal every time. Highest levels of sample security and integrity. Use with mass spectrometry.
Headspace is a technique used to introduce volatile components of a sample into a gas chromatograph (GC). The matrix typically is not amenable to direct injection into the GC system. Examples are liquids and solids such as lotions, blood, soil, polymers, even electronic components.
Analytical Vials. Vials play a significant role in analytical analysis and result reproducibility. Vials must be inert and free of extractables or leachables to prevent affecting results. Using certified, application-specific, contaminant-free vials can significantly reduce risk. We offer a broad spectrum of Supelco ® products including
Mass Spectrum: Septa Fragments in Inlet Liner Inlet Liners GC users should routinely inspect and replace the inlet liner to remove contaminants and active sites from the sample path. Samples passing through the liner can contain components that do not volatilize, leaving behind residue.
Choose compatible GC accessories to maximize performance, too. You’ll find GC inlet liners, septa, syringes, vials, calibration standards, extraction solvents, and gas management products, such as generators and pressure regulators, to support your methods from sample preparation to separation. Explore All Chromatography Products
La-Pha-Pack offers a complete range of consumables for HPLC, GC, and Headspace Analysis comprising of vials, septa, seals, filters, crimpers and other accessories. Besides all standard items for almost all common instruments in the chromatography market, La-Pha-Pack ® also carry out special production runs of vials, septa and combination seals
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