7/1/2022 0 Comments Choosing Chromatography VialsChromatography vials are containers used to store a liquid sample during a laboratory procedure. They are often made of polypropylene because of its high melting point and low abrasion resistance. They are also durable, allowing them to withstand even the harshest temperatures. A high quality vial will protect the sample and avoid the need for replacements due to accidental breakage. Here are some tips to choose the right chromatography vials for your research. You can click here for more information about these vials. Closures: Chromatography vials are sealed with a septum and cap. These seals must be inert and free from contaminants. HPLC/GC Vials are available with screw, crimp, and snap caps. A screw cap is the most common type of closure, as it prevents evaporation while allowing for the release of vacuum. Both screw and crimp caps can be used to seal chromatography vials. Vials with large openings: These are available in clear and amber glass. They are characterized by a PTFE/silicone septum and a polypropylene open screw cap. A borosilicate glass vial has a diameter of about 12 mm. A polypropylene vial is typically the smallest of these two. It is important to keep the size and shape of the vials in mind when choosing a chromatography vial. Find details about this product on this blog post. Typically, chromatography vials have a screw or crimp cap closure. Some are pre-assembled, while others are sold individually. Snap caps require no special tools to assemble. Crimp caps are preferred when the concentration of volatile compounds is high. Snap caps are an alternative to screw caps, but they have their limitations. A screw or crimp cap may be too tight for volatile chemicals. The screw and crimp caps provide a better seal. Plastic and glass chromatography vials have different specifications. Plastic vials are generally lightweight and are easier to handle. They are also cheaper to produce compared to glass or polypropylene. In addition, plastic vials have glass-like clarity and an amber hue, which is useful when the substances in a liquid sample are sensitive to light. For these reasons, plastic vials are an excellent choice. The type of closure that is suitable for a chromatography vial depends on its use and features. A screw cap, for example, is typically used to create a tight seal. Screw caps are typically secured with a screw, and when used properly, they can reduce residual volumes. However, a screw cap is only effective if it doesn't have a slit, which can cause contamination. The closure can also affect the sample's performance. Another consideration for a chromatography vial is its capacity. The volume of sample can vary, ranging from a few milliliters to several ml. Using a limited volume insert can save a lot of money when a limited sample volume is required. They are designed to be used in combination with an autosampler. The autosampler uses a set injection depth to dispense the sample. Depending on the sample volume and residual volume after sampling, you can choose an appropriate style of HPLC / GC vial. Flat inserts have the largest capacity. Discover more about the above topic by clicking here: https://en.wikipedia.org/wiki/Vial.
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