At CRS, we have a wide range of options to purify your laboratory gases. We understand it can be overwhelming to narrow down which is the right one for your application. Never fear, we are always available for technical support and with the right information, we can help make the best recommendation for you. We typically have a set of questions to help us narrow down the options. The purity level of your source gas, and your flow and pressure ratings can drastically affect how long any given filter will last for your specific application.

We often get questions asking for lifetime estimates on filters. While we make our specifications conservative to try and get 1 year of life out of each filter from an "average" application; the truth is, this estimate can vary drastically based on the conditions of your application. To get a true estimate we have to collect some data pieces from you first! With our new form, you can easily gather the information needed and input it into the form. You are guaranteed to hear back from one of our team members by the next business day. Check it out...

A nerve-wracking question GC analysts might have asked themselves at some point is, “Will my septum last through the entire weekend autosampler run?” In this blog we’ll look at some of the factors that help answer that question, but starting with, what is injection life anyway? The simple answer is that septum life is the number of injections you can get out of a septum before you notice any degradation of your analytical results. I word it this way because in modern GCs, if an inlet leak is detected, which occurs depending on the brand at, say, 3 or 4 mL/min, it will shut down the instrument, ending the run but at least keeping un-analyzed samples in their intact vials.

At CRS we have several customizable filter options to fit your specific application. We have outlined some common questions in the selection process.

The easiest and most obvious answer is to use a purifier with a built-in indicator: order a replacement when it starts turning color!

Whenever possible purifiers should be installed in a vertical position to prevent “channeling” of the gas stream, which can lead to premature contaminant breakthrough.

This benefits our customers by saving money on cartridges and also helps save the planet by keeping heavy metal cartridges from entering our landfills.

There are many kinds of fittings on the market for gas filters, including standard compression fittings, quick connect fittings, and push to connect fittings- to name a few. We are going to take a look at the different kinds of fittings and their applications

Headspace analysis is particularly sensitive to the quality of the sealing system used to contain the sample. The high pressures and high temperatures in use require high-performance and reproducible seals. So – in the absence of a high-priced residual force tester – how do we determine the tightness of the cap?

Adding a chamfer to septa significantly improves performance by guiding the needle to the same location each time, reducing coring. However, without pre-piercing there is still a high risk of contamination by the SPME needle punching a septum core into the liner, presumably on the first piercing...