Choosing Right Vial For Chromatography

 

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While the final decision on what type of chromatography vial to use is entirely up to you, the right choice can make a big difference in your results. Better-quality vials offer less risk of contamination, which is important if your results are to be reliable. Make sure to choose vials that are the right size and material for your chromatography. Following these guidelines can save you time and money in the long run.

Glass or plastic vials come in clear or amber versions. Choose clear or amber if your sample is sensitive to UV light or must be analyzed visually. Vials with writing areas are available for easy labeling. If you don't have a label printer, consider purchasing writing patches. Make sure to plan out your labeling process before sampling to avoid any mistakes. It's also important to make sure that your samples are protected from moisture, so you don't have to worry about spills or leaking. By checking out here you will learn more about gas chromatography vial.

Choosing a vial size will also depend on the volatile and stable content of the sample. Also, consider the type of chromatography instrument you're using. Micro-inserts are a great choice for micro-volume sample testing. However, if you're using a robot arm, you'll want to choose a vial with a larger mouth opening, such as 9 MM.

Glass vials are the most recommended for chromatography because they are sanitary and can withstand a wide range of temperatures. Plastic vials are cheaper to produce and can be moved around easily. Glass vials are also transparent, making them ideal for light-sensitive samples. Glass vials are also more convenient to use because they are easier to clean. This makes them more convenient to transport and use than plastic ones.

While crimp neck chromatography vials are generally preferred for LC applications, screw-cap vials are ideal for GC/MS or HPLC/LCMS analyses. Crimp neck vials are especially helpful for GC with volatile compounds because they provide an extra assurance of sealing. So, if you're using volatile compounds, you'll definitely want to opt for crimp vials. To add on to your knowledge about the process of manufacturing chromatography vials learning more about it here.

The process of manufacturing chromatography vials can cause contamination on the glass surface. This contamination can affect the analytes' adsorption efficiency. The amount of free silanol groups in the glass varies depending on the quality. For example, a 70-type glass contains 70% silanol, compared to 33% free silanol. The higher the expansion coefficient number, the greater the adsorption efficiency. Another factor to consider when choosing the right vial for your chromatography application is the amount of surface imperfections.

Besides the size and shape of the vial, the septum of the chromatography vial is an essential component. A pre-slit septum prevents carryover of samples from one vial to another and allows ambient gas to equalize. The slit also prevents a vacuum from forming inside the vial. The septum is also the key component in chromatography vials and can cause damage to the instrument. For more enlightening info about this topic, visit this site: https://en.wikipedia.org/wiki/Column_chromatography.