News|Articles|November 20, 2023

Selecting the Right SFC Column

SFC can provide solutions for challenging separations beyond traditional normal- and reverse-phase HPLC. But to get the best results, you need to select the right columns. This eBook examines column options for accurately and efficiently separating a variety of pharmaceutical compounds using SFC. Topics include SFC column fundamentals and considerations, selecting SFC columns, and columns for SFC chiral and achiral analysis.


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Figure 2. Split injection used to measure triplicate test of MTBE, hexane, o-xylene, and 1-methylnaphthalene comparing different solvents (methanol, methylene chloride) and column insertion distances starting with 0.5 mm, 5.0 mm, 10.0 mm, 15 mm, and 20.0 mm. Methanol had the best performance at the 5.0 mm insertion distance and methylene chloride looked slightly better at the 0.5 mm. We would still recommend not going below the 5.0 mm manufacturer recommended insertion distance.
Revisiting insertion distance for methanol and methylene chloride in GC analysis and confirming that insertion depth strongly affects response and reproducibility.
Basel, Switzerland. Old town with red stone Munster cathedral on the Rhine river. © SCStock - stock.adobe.com
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