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What’s the difference between SW/SWXL and PW/PWXL SEC columns?

April 26, 2017columns difference pw pwxl sec SW swxl

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What’s the difference between SW/SWXL and PW/PWXL SEC columns?

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The “S” in SW and SWXL stands for silica so these columns are created using porous silica. The “P” in PW and PWXL refers to a polymeric support of porous methacrylate. The subscripted XL is used to denote smaller particle, higher efficiency columns. However, the pore size is the same for a given type of column, e.g. G2000SW and G2000SWXL have the same fractionation range.