Diamine has been manufacturing ink in England since 1864. Over that time the product range has changed hugely, but the quality has always stayed high.
2014 was the company's 150th anniversary, so Diamine created a new range of inks which are now available in cartridges.
Diamine ink is safe to use in all brands of fountain pen and is one of the finest inks available. It's also vegan-friendly.