Dating papers

DigitalNC: North Carolina's Digital Heritage

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. An ink formulation can be identified to a specific manufacturer to ascertain the first date of commercial availability. If an entry is dated in , but the ink was not available until then the document could not have been created in Inks contain chemical solvents that evaporate and generally go through a drying process that can last up to 2 years. Comparing Writing Inks. Chemical analysis can be conducted on a suspicious entry to determine if it is consistent with other associated or surrounding writings.

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Before there was swiping right, singles found love the old-fashioned way … in the personals section of the local paper. By Lisa Rabasca Roepe January 20, Initially, reading the weekly ads was a form of entertainment but, after a long-term relationship unexpectedly ended, I started perusing the ads to see if anyone sounded mildly appealing. The ad went on to mention two of my favorite activities—beer brewing and bike riding.

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The knowledge of the detailed material composition of paper can help art historians, archivist, librarians, paper historians, and conservators to determine the possible age of a document or a work of art. The dating of paper by the identification of specific paper components is especially applicable to paper from the 19th century. In this era, many changes in the paper production technology occurred and new raw materials were introduced in relatively short time intervals. ATR-IR and Raman spectroscopic measurements were used to analyze the chemical composition and structure of papers from the 19th century. The infrared spectra showed the general material composition of the papers.

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Document Dating

Have questions? Give us a call IPS Testing is able to determine likely age ranges for paper products by using wood fibers, pulping chemistry, paper additives and surface treatments to serve as dating markers. Our experienced fiber science team, led by Walter Rantanen, has developed an international reputation for paper and document forensics.

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