No abstract

ALTHOUGH many types of apparatus are available commercially and many more have been proposed for the collection of gas-chromatographic fractions, they are mainly useful only on a milligram scale, e.g., Haslam, Jeffs and Willisl have decribed methods that will handle down to 1 to 2 p1 of liquids. However, when 0-2 mg or less of material is to be collected, difficulties are encountered, the main one being that, with the rapid flow of carrier gas from the outlet of the chromatograph,