How to Use the Agilent Deans Switch to Analyze Complex Matrices

27 Jul 2021

GC Application Scientist, shannon, talks about the Agilent Deans Switch and how it is used in gas chromatography to analyze complex matrices. Play the video and then post any questions or comments about the topics discussed below.

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shannon over 2 years ago in reply to ISH +1

ISH, that is a very good question. Yes, you can. However, you have to be mindful of a few things. For the Deans Switch to operate optimally, the downstream pressure need to be the same on both columns…
shannon over 2 years ago in reply to ISH +1

Using columns, See new video posted. How to Calculate Deans Switch Restrictor Sizes for GC and GC/MS - Blog - Gas Chromatography - Agilent Community

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Bolt77 over 2 years ago

Hello anyone got an idea why i always get a double peak on the 2nd dimension when cutting a single peak on the first dimension using a deans switch? also the peak area (the double peak in total) is lower than the peak area of the peak i cut out ? (2 FIDs) i cant figure out where i went wrong when setting it up
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Bolt77 over 2 years ago

Hello anyone got an idea why i always get a double peak on the 2nd dimension when cutting a single peak on the first dimension using a deans switch? also the peak area (the double peak in total) is lower than the peak area of the peak i cut out ? (2 FIDs) i cant figure out where i went wrong when setting it up
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kristen.sensabaugh over 2 years ago in reply to Bolt77

Hi Bolt77 can you post this as a question in the GC Forum? That will give it better visibility. Thanks!
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ISH over 2 years ago in reply to Bolt77

Adjust switching time..
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Bolt77 over 2 years ago in reply to Bolt77

really changing the switching time doesnt help at all, i can send the whole chromatogram to the 2nd column (setting the dean switch to on for the entire run) and it will only result in a chromatogram full of double peaks on the 2nd dimension...... im thinking theres a dead volume in the dean switch....
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