7. Aged fingermarks on plastic developed with acid-modified IC powder (7a) fingermark with age of 1 day, (7b) fingermark with age of 7 days, and (7c) fingermark with age of 14 days.
7. Aged fingermarks on plastic developed with acid-modified IC powder (7a)fingermark with age of 1 day, (7b) fingermark with age of 7 days, and (7c) fingermarkwith age of 14 days.