title: A novel multi-column gas chromatographic system.
abstract: Constructional and operating details are given of a special valve permitting selection of any one of four columns for connection to the detection system of a gas chromatograph, all four columns being connected to the carrier gas stream. If the retention times permit it, the columns may be used simultaneously for chromatographic separations and switched in turn into series with the detector for determination of the eluted components.
authors.affiliation: Department of Chemistry University College of Swansea Swansea, Glamorgan, U.K.
authors.forename: J H
authors.initials: JH
authors.lastname: Purnell
authors.forename: B C
authors.initials: BC
authors.lastname: Shurlock