What Ferrule Material and ID Can I Use in my GC?

As is typical for scientific instrumentation, gas chromatographs require upkeep and maintenance. You need to have the right tools and supplies on hand to keep your instrument running its best. Because GCs use pressurized gas, good connections are paramount, and selecting the right ferrules for column installation is important. Get the run down on choices and decision factors in this video.
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Additional Resources
GC Nut & Ferrule Compatibility Table | www.restek.com...
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Restek Recommended Tools & Parts
GC Ferrules | www.restek.com...
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[@thilpanneerpanneer2327]

Good Explanation sir.

[@ramonverduzco3522]

Why is graphite not good for GCMS? We have been using graphite o-ring for liner and graphite ferrules for connections. What problems have we been overlooking?

[@RestekCorp]

Pure graphite ferrules can leak under vacuum. It is generally recommended to use a vespel or vespel/graphite blend, particularly at the source nut.

[@the_hamrat]

The other question is: Am I connecting to an ECD. That should always be graphite & vespel as the graphite is permeable to oxygen

[@RestekCorp]

Good addition, thank you!

[@danielalvarado9264]

What ferrule do I need for a semi-capillary column with an OD of 0.95 mm?

[@RestekCorp]

A 1.0 mm ID ferrule would typically be the one used with a 0.95 mm OD column. You can see some here www.restek.com/en/products/accessories-labware/gc-accessories/ferrules/107693/?sku=21058

[@danielalvarado9264]

@@RestekCorp thank you

[@RestekCorp]

You're welcome!