Iron gall inks from KWZ, in an impressive range of colours.

These iron gall inks are, as with all iron gall inks, very permanent. They darken on the paper as they dry and age. Unlike other iron gall inks, though, these are solutions, with no particles to clog your pen feed, and while the ink is still slightly acidic, they're less so than most. The result is a much safer iron gall ink, making them more practical for day to day use.

It should be noted, though, that these are still iron gall inks, so do need a bit more care than standard fountain pen inks. They should not be left in pens you're not going to use for a while, and flushing the pen through with water every so often would be a good idea.

KWZ Inks came about as the result of Konrad Zurawski, a graduate of the Faculty of Chemistry at the Warsaw University of Technology, following his passion for fountain pen inks, and making the products he wanted to see and use.