HPLC
For a typical adsorbent such as silica gel, the most popular pore diameters are

60 and 100 A°
100 and 150 A°
150 and 200 A°
10 and 50 A°

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HPLC
HPLC methods include

liquid/solid (adsorption) chromatography
All of these
liquid/liquid (partition) chromatography
ion exchange and size exclusion chromatography

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HPLC
Column efficiency is measured in terms of number of plates which is

inversely related to the square of the peak width
directly related to the square of the peak width
inversely related to the cube root of the peak width
directly related to the square of the peak width

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