high efficiency kappa columns are available in 0.50mm, 0.32mm, 0.18mm, 0.10mm and 0.075mm id capillaries, and have an 8th inch stainless steel sleeve around the capillary to make them very robust for day-to-day laboratory use. they also have standard steel female endfittings, and so they can be used with standard column connectors.  

hypurity c18 capillary columns provide excellent chromatography with very small sample volumes, and provide the performance, which makes them suitable for lc/ms applications.  

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