How to Choose the Right Caps and Septa for Sample Vials


Membrane Solutions’ Caps and Septa Purchasing Guide

Sample vials are integral to a plethora of laboratory processes as these secure and maintain integrity of specimens under study. Unfortunately, most users overlook the importance of selecting the right sample vials, caps, and septa for their specific applications – not realizing that these can greatly affect results. When choosing the right vials for your applications, you have to consider these three essentials: the septum, the cap, and the vial itself. Membrane Solutions has prepared this quick and easy guide to help you find the best caps and septa for sample vials, ensuring you get optimal performance and results no matter what your application is.  

Finding the Best Septa: 5 Important Factors to Consider

Choosing the right septa is critical not just in preventing sample contamination, but also in protecting your syringe needles and vials. Don’t compromise the accuracy of your results, here are five important factors to keep in mind before you make your septa purchase:

  • Temperature

Some septa are made from materials that melt at high temperatures, leading to possible sample contamination. If you are working on high temperature applications, get suitable septa which are stable at your system’s required temperatures.

  • Sealing property

Will you be working on multiple samples or will there be time delays in your sample analyses requiring long-term storage of samples? Answering these questions would help you identify which septa to go for based on sealing requirements of your applications. The sealing property of a septa will determine whether it can be used for multiple sampling or not, for long-term storage or not.

  • Puncture resistance

Reduce possible debris in your samples and prevent contamination by getting septa that offers easy needle puncture and high puncture tolerance.

  • Chemical compatibility

Depending on your specific application, choose the right septa material that is greatly compatible with the solvents you will be working with.

Membrane Solutions’ Septa Selection Guide