How accurate is forensic ink dating

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Global Forensic Services can provide objective examination of evidence in active cases or on previously performed work to determine if proper procedures were followed and accurate results were given. Courtroom assistance can be provided to include expert testimony and trial preparation. Global Forensic Services provides objective examination of evidence in active cases or on previously performed work to determine if proper procedures were followed and accurate results were given. Additional consultants are brought in as needed to provide the best overall service available.
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Ink Examination

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Forensic science of dating inks fine tuned -- ScienceDaily

Miller is an Emeritus Professor at the University of Michigan College of Engineering and a registered professional engineer and consultant with more than 30 years of experience as an engineering expert witness. He specializes in warnings, labeling and instruction manuals, consumer product design, process safety, Gossman Forensics is an international chemical and environmental forensics company. Our experience spans over 40 years of industrial, regulatory and environmental activities. The focal point of Gossman Forensics service is a rapid response to client needs with accurate, competent professionalism. Global Forensic Services, LLC is a forensic laboratory, as well as a consulting and private investigative team offering more than 35 years of experience and training in a wide range of forensic disciplines and investigative strategies. Experts in ink dating, questioned documents, handwriting, corporate security, crime
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Ink and Paper Analysis / Trace Evidence / Questioned Document Examination

In this paper we describe a case in which a cash book, dated of the year , was sent to the Forensic Science Division, Document Laboratory, Zurich Canton Police in March The questioned document was a list of 29 pages containing a consecutive handwritten numbering and dated entries payments made of blue ballpoint pen ink. By definition, a cash book has to be written by hand and the entries have to be made daily. The questioned document was suspected to have been written within a short period e.
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The visual appearance of inks is only one clue to their composition. Sometimes two inks can look identical to the naked eye but further tests may be able to distinguish between them. Where possible non-destructive tests are used. For example inks can be examined using infra red or ultraviolet reflectance at various wavelengths or using visible light but examining emissions from the ink in the infra red area of the spectrum infra red luminescence. Our examiners use an instrument known as a VSC HR to carry out non-destructive specialised lighting examinations.
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