Platinum Classic: Khaki Black Ink

Platinum Classic Khaki Black is a permanent dark brown ink that darkens as it dries. This ink is waterproof, lightfast, with somewhat dry flow, and a relatively quick drying time.

Platinum Classic Khaki Black is a modern iron gall ink, which means it’s permanent (and becomes even more permanent as it darkens with time). If you leave this to dry in cheap steel nibs, it may corrode them (iron gall inks are acidic), but it’s perfectly safe for normal use.