19049 Baystate Concord Grape

The purple is so deep and rich that it almost glows on the page, and even after letting the nib sit uncapped for a minute, it started right back up without a skip. The 3 oz bottle is generous too, so this will last me a long time.

That water resistance claim is no joke — I dripped water across a page of doodles and the ink stayed crisp with barely a smudge. The 3 oz bottle is generous too, so this electric purple is going to last me a long time.

The color is an electric violet-purple that looks almost neon on good paper, and it dries to a surprisingly solid water-resistant finish. I haven't tested it against forgery, but the way it holds its hue after a spill is genuinely impressive for an ink.