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Ink dating – Alternate Method: Another method for dating inks using thin layer chromatography exists.
The ink library approach, as it is commonly referred to, comprises the other portion of the static approach to ink age determination.
For this reason this type of tag is commonly referred to as a florescent date tag.
This single tag was later expanded to four tags, A, B, C, & D.
This was a single tag was could be extracted with the ink, separated and analyzed with ultra-violet light.
This ink dating method primarily involves microscopic examinations and can also incorporate some basic chemical solubility testing.
Some examinations can be performed on fountain pens to determine type of nib, type of ink and the first date of introduction of each of these.
By the combination of the presence or absence of each tag either a specific year or a range of years could be established.
The procedure most commonly used for the detection, isolation, and analysis of these date tags in ink dating is: The comparison between the known tag and the questioned ink being examined should focus on whether the florescent compounds are the same color in the known and questioned.