ISO Hunt's "Extra Black" Ink?

[MacMorrighan]

Hey, I was listening to an interview featuring Dr. Neil deGrasse Tyson in which he whipped out his former lab book from his college days and they were just as dark and black as the day he had inscribed his notes. He said, if I heard him correctly, that he used Hunt "extra black" fountain pen ink. I plan on returning to college to obtain my master's degree in vocal pedagogy, and I want my pedagogy notes, as well as the notes from the master classes that I attend, and my own voice lessons to be just as dark after 20 years or more as the day when I wrote them. Therefore, I was wondering if anyone still produces this ink, of if you can recommend anything that's just as good?!

[Chrissy]

Already posted with replies on this duplicate post

[MacMorrighan]

Oops! I forgot that I'd already posted this. I'd been a bit scatterbrained lately.