Jul. 31st, 2020
Aijiren provides a large number of HPLC Vials, as well as Closures that are compatible with HPLC Vials. Even one type of HPLC Vial can be used with multiple types of Closures. Many customers do not understand the difference between different types of Closures. The article mainly describes the types of Aijiren's Closures and how to choose the appropriate Closures for your HPLC Vials.
The vial closure provide by Aijiren consists of a cap and septa. The cap is typically made of either aluminum for crimp seals or plastic (polyethylene, polypropylene, or a phenolic resin), for screw or snap seals. Aijiren's Caps are also divided into center-hole and without center holes, Caps with center holes for easy incoming and incoming samplers of automatic samplers, and Caps without center holes for HPLC Vials to store samples.
Septa is a septum material that is drilled with a syringe needle to extract samples from vials. Septums come in a variety of configurations and are made up of a variety of materials. Septums are usually made of rubber (natural or synthetic) or silicone. You can also cover one or both sides with PTFE. Be sure to choose a solvent-compatible septum.
In most cases, HPLC vial septas, which are lined with PTFE on the side facing the sample are best. HPLC vial septums can also be slits in advance as single slits or cross slits. By slitting the HPLC vialceptor in advance, it is easier to penetrate the needle, especially for larger needles commonly used in LC autosamplers.
If you select a crimp closure after selecting hplc vial closure，you have to use crimpers to secure the closure and decrimpers to remove it is recommended. These useful tools are designed specifically for work and make capping and capping unprocating a much simpler task. Aijiren provide Crimpers and decappers are available in manual styles.