Published Online: 1 October 1974
Page Count: 3
Ink analyst, Janesville, Wis.
(Received 25 January 1974; accepted 4 March 1974)
The use of Eastman Kodak Chromagram® sheet for the separation of the various dyestuffs used in the compounding of inks has already been documented . It has developed into one of the more useful techniques for the identification of inks. Both silica gel and cellulose Chromagram® sheets are now commonly used with a variety of eluent systems. Notwithstanding the variety of techniques available to the chromatographer, there are still certain mixtures of dyestuffs which do not yield clear-cut separations. The technique which will be reported here allows better separations to be made when used on these difficult mixtures.
Paper ID: JFS10475J