Choosing Your LC Column Dimension

There are so many options when choosing a column for liquid chromatography. Here, we focus on the physical dimensions of the column-length and internal diameter. How do they impact our chromatography? What analytical requirements might impact our selection? By understanding these factors, we can always make an informed LC column selection.
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Additional Resources
HPLC and UHPLC FAQ | www.restek.com...
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Restek Recommended Tools & Parts
LC Columns | www.restek.com...
LC Tubing and Connectors | www.restek.com...
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[@SasiKumar-lg1wc]

How to reduce the column back pressure?

[@yamawwad]

Could you please explain concentration determining in HPLC ? thank you.