Fingermark samples of varying ages were treated with
ninhydrin, post ninhydrin metal salt treatment, DFO and 1,2-
indanedione. Direct comparisons between each conventional
treatment and the optimised 1,2-indanedione formulation were
made using fingermarks that had been directly cut down the
middle. Fingermarks were examined under white light and in the
luminescence mode using the VSC 2000 and the Polilight lamp.