While I know inks like Noodler's Black are listed as "eternal" or however they word it... basically, archival inks. And that's fine, except the inks that are listed as archival are limited... so my question is, for "normal inks", how long will the ink last once on paper? I'm not talking ink that gets wet, etc. Basically, I have a 6 month old neice whom I am planning to write a series of letters to for her to open at specific points in her life... so these letters will be written NOW, but not opened for perhaps 5-, 10-, 20-years... Assuming they are kept in their envelopes, how long can I expect ink to still be readable at that point?
Also, with the exception of the few Noodler's inks that list as archival, are there any other brands that offer FP "permanent" inks? Thanks!
Also, with the exception of the few Noodler's inks that list as archival, are there any other brands that offer FP "permanent" inks? Thanks!