Is it possible for the FSL to determined the age of the ink?

Sir,

It can be difficult to age an ink, unless it is known for sure that the ink did not exist when the document was said to have been prepared. From the 1990s, some ink manufacturers started to add a chemical tag to their products to indicate the year of manufacture. This enables chemical analysis to age the ink, but the tests to do this remain rather expensive.

Thank you ver much for your responds. Can the expert accurately determine the age of the ink by muinutes or hours differences?

Sir,

Report says it is possible, A plurality of dyes having differing reaction rates may be added to the ink to enable precise measurements to be made over different time intervals. It also says it is expensive,

Thank you so ,much for your feed back in this issues. Suppose the complainant is ready to make any xpnditures for the result of the FSL report, in that case, can the expert accurately come out with the precise report as to the year, month, weeks, days, hours and minutes of the age of the ink? And ink means not only warter ink but other ink also?

Report of Government FSLs are only acceptable by courts. Even ordinary medical certificate from a private medical practitioner is not accepted by them. Do FSLs work at our bidding?

 Courtesy

https://www.patentstorm.us/patents/5600443.html

A method and ink composition are disclosed that utilize two mechanisms for the purpose of indicating the approximate age of an ink that has been deposited on a writing surface. The first mechanism relates to detecting color shifts of pH sensitive compounds in the ink as the result of the evaporation of certain acidic or basic chemicals thereof. The second mechanism relates to the oxidation of compounds in the ink. Spectroscopically generated curves are plotted as the ratio of reactants to products, versus time. The spectral characteristics of the ink are determined in units of percent reflectance of the active compounds in the ink so that the age of the ink can be computed by reference to known reaction rates. A plurality of dyes having differing reaction rates may be added to the ink to enable precise measurements to be made over different time intervals.