The second form of ink dating is the evaporation of volatile solvents and decay of bands on a chromatogram, This is the technique used to date inks to within six months until they are approximately three to four years old.The third analysis is comparing a known dated standard of ink kept in the chemist’s library.When conducting examinations, forensic document examiners must have known specimens to which they compare the material in question.These samples may come from any number of known sources, such as a particular ink manufacturer or machine.
Even documents that were shredded or burned may prove useful if reconstructed.
The chemical analysis of writing and printing inks, as well as paper, can be invaluable when trying to prove whether a document is fraudulent.
Ink dating is a highly specialized forensic examination and considered to be one of the most accurate and reliable methods to help determine the age of a document. has extensive experience as a forensic chemist and document dating specialist.
In cases involving handwriting, samples are usually divided into two types: requested writing specimens and collected writing specimens.
Requested specimens are writings dictated by the investigator to the writer.