About Chromatography Vials

 


Chromatography vials are used to analyze the chemical components of a liquid sample. They are generally made of glass and can either be amber or clear. Glass is preferred as it protects the contents of a chromatogram from ultraviolet light, which can damage certain chemicals. Amber vials provide better visibility and are usually made of 33 expansion glass, which can withstand temperatures up to 1,200degC. In contrast, glass vials are typically made of 51 expansion glass that can withstand temperatures over 1,00degC.

 

The performance level of chromatography vials is dependent on the use of the chromatography method. For higher-sensitivity methods, a Performance Level 2 vial is used. It maintains the throughput. A Performance Level 3 vial is designed to be particularly difficult, and has advanced features. A Performance Level 3 vial is made of 33-expansion glass and features a PTFE/silicone septum.

 

Type I borosilicate glass is the most common material for chromatography vials. Polypropylene is also an acceptable alternative to glass, but it is not as sensitive. For pH-sensitive materials, polypropylene offers a low-cost solution. Some types of chromatography vials have a tapered bottom and pulled tips. They can also be equipped with plastic polypropylene springs, which absorb shock during needle penetration.

 

Chromatography vials are temporary containers used to hold samples undergoing analysis with liquid or gas chromatography. The borosilicate glass used in chromatography vials is extremely durable, and it is ideal for high-temperature reactions. Typically, chromatography vials are used in forensic laboratories, manufacturing labs, and legal settings. They are available in various sizes and volumes. There are even sterile borosilicate glass vials.

 

Chromatography vials come with different cap finishes. Crimp caps and screw caps are the most popular choices for LC and GC. Screw neck vials are convenient, reproducible, and ergonomic for users. Crimp neck vials are also popular for GC experiments, especially if they contain volatile compounds. CertainSTART vials are compatible with National Scientific, Chromacol, and Sun-Sri caps.

 

When selecting a chromatography vial, it is important to consider the compatibility between the sample and the solvent. For example, amber glass vials are used for light-sensitive samples, while plastic polypropylene vials are best for solutions that are sensitive to glass. Browse the page linked here for more details. Another factor to consider is the type of closure. Vials can be screw-capped, crimp-capped, or snap-capped.

 

The type of closure depends on several factors, including the volatility and stability of the sample, and the type of autosampler. The correct closure is a more complex choice than the type of vial. PTFE and silicone / silicone closures are compatible with HPLC needles, but they are also more expensive. To avoid contamination, a PTFE/silicone closure should be used. Similarly, the color and composition of the chromatography vials are crucial.

 

As the market for chromatography vials increases, the use of plastic will continue to rise. The main reasons for this growth are government regulations and increasing food safety concerns. However, plastic chromatography vials have been affected by stringent government policies regarding the use of plastic. Therefore, a clearer understanding of these regulations is necessary. If you want to know more about the industry, contact an expert in the field. To expound on this topic, check out this resource now: https://www.encyclopedia.com/science-and-technology/chemistry/chemistry-general/chromatography.