Dating ink on paper 100 dating web

Posted by / 27-Nov-2019 15:19

This was a single tag was could be extracted with the ink, separated and analyzed with ultra-violet light.For this reason this type of tag is commonly referred to as a florescent date tag.In order to do this the following steps are taken: Ink dating – chemical tag: The detection of a chemical date tag can disclose the exact year that the ink being examined was manufactured.

This involves the comparison of the questioned ink being examined to a known library of inks to determine the manufacturer and formula of the ink.

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The primary method of detection of these tags is called XREOF (X-ray excited optical fluorescence).

Information on these tags is confidential and closely kept.

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The idea of getting manufacturer’s voluntary cooperation to incorporate these tags with their existing formulations was developed in the late 1960’s at the Bureau of Alcohol, Tobacco, and Firearms.