7/1/2022 0 Comments Choosing Chromatography VialsChromatography vials come in a variety of sizes, from 12x32mm (2 mL) to 15x45mm (4 mL). They are also available with a standard or wide mouth opening (four or six millimeters). The cap type you use is important, too, since you may need to handle small samples manually. For example, the cap on a glass vial is different than one for plastic or metal samples, which may require a narrower opening. Chromatography vials are typically made of borosilicate glass. They have lower chemical resistance than borosilicate Type I glass. A silanized glass vial, on the other hand, is borosilicate glass that has had its surface treated with organosilane. Note that this type of glass is appropriate for pH sensitive compounds and long-term storage. It is also available with a crimp of 11mm. Another important consideration when choosing chromatography vials is sample compatibility. For example, amber glass vials are used for light-sensitive samples, while plastic polypropylene vials are appropriate for solutions that are sensitive to glass. A vial's closure also affects the sample's stability. There are three types of closures available: screw cap, crimp, and snap. When choosing a closure, make sure that it won't be damaged by repeated openings. Another important consideration when choosing chromatography vials is the compatibility between the vial and the autosampler. Incorrect vials may damage the autosampler or the sample, causing a degradation of the sample. Incorrect vials are also difficult to replace, so the size and shape of the vials you choose depend on the type of autosampler you use and the diameter of the samples you need to analyze. The three most common types of chromatography vials are crimp, snap, and screw. Crimp vials are the gold standard for gas chromatography analysis, and are also the preferred choice for LC/MS. Crimp vials are also used for GC with volatile compounds. Snap-top and screw-cap vials are ergonomic and compatible with both National Scientific and Chromacol vials. Discover about these vials now. Unlike blood collection tubes, chromatography vials are made from clear, transparent, amber, or white plastic. They come with different caps, and may even be autoclavable. Whether your samples are samples of blood or essential oils, these vials are essential to the workflow of the various labs and clinical settings. The following sections provide a brief overview of the different types of chromatography vials. Besides glass, plastic chromatography vials have their own advantages. The main advantage of plastic vials is that they are lightweight and easy to handle. They also are inexpensive compared to other materials. They are also relatively easy to produce. Some plastic chromatography vials have a silicone septum or polytetrafluoroethylene (PTFE) septum that helps them maintain a tight seal. Filter vials are another option for removing particulates from your samples. Filter vials often feature a cap and plunger for forcing the sample liquid through the filter. The filters improve the sample quality and reduce the amount of tools you need. Some of these vials also fit into standard autosamplers or trays. To make the process as efficient as possible, choose a certified chromatography vial. Find more related details here: https://www.encyclopedia.com/science-and-technology/chemistry/chemistry-general/chromatography.
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