Iron-Gall (IG) inks are traditional inks that had been widely used until the mid-twentieth century. Their popularity came primarily from the fact that they had very intense dark color. Iron-Gall ink easily penetrates deep into the structure of paper which makes the text written remarkably stable and waterproof.
Iron Gall inks are considered to be dry inks but KWZI IG inks are rather wet. Iron Gall inks require a little bit more maintenance then standard inks when used in a fountain pen but they are excellent daily writers. You can find KWZI tips and tricks about Iron Gall ink below.