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In fact, the dating of documents is a key area in the field of forensic science.
An ink formulation can be identified to a specific manufacturer to ascertain the first date of commercial availability. He trained with and served as the Chief Research Forensic Chemist with the United States Secret Service and was responsible for maintaining the largest known forensic collection of writing inks in the world.
This study reveals that there are noticeable differences in the rates of diffusion of the same classes of inks, depending on time interval. Speckin Forensic Laboratories – The Forensic Specialist.