ONE of the difficulties encountered in investigating the metabolism and distribution of catecholamines has been the inadequate separation and isolation of these substances from tissue extracts 1.

Chromatography in Greek means to ‘write with colors.’ It is a versatile separation technique developed in 1903 by Mikhail Tswett, a Russian botanist. He separated colorful plant pigments using a ...

THE separation of several non-volatile carboxylic acids by paper chromatography has been described by Lugg and Overell 1,2. These workers found that it was impossible to carry out the separation with ...

Postnova Analytics have published an informative new white paper that details how multi-detector Asymmetrical Field Flow Fractionation (AF4) and Electrical AF4 (EAF4) techniques are transforming the ...