Pelikan Brilliant Black. A standard black ink that is a good bet if you have a wet writing pen or have to use poor quality paper. It has the nice quality of writing with a narrow line, which keeps your fine lines fine. It’s dependable, reasonably priced and has very decent water resistance. But it’s also a dry ink, so with a dry pen it can look gray.
An everyday ink? Absolutely, especially with wet pens or challenging paper.
Fountain Pen Follies 
At first it looks very deep dark black, but on a second look, do I see a hint of red/purple in there?
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I would not doubt that, given your track record. 🙂 It’s actually not the darkest black ink, in real life. But its dry quality is a feature I really appreciate, because it keeps my extra-fine lines … actually extra-fine.
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