Abstract
For the use of squalane as a standard stationary phase in gas-liquid chromatography, a preliminary clean-up step is suggested where the squalane, in a paraffin solvent, is passed successively through columns of activated carbon and alumina. A new standard non-polar stationary phase, produced by the catalytic hydrogenation of an Apiezon grease, is described. It has the advantage over squalane of a maximum operating temperature of 200°, allowing column polarities at high temperature to be evaluated.
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