Diamine has manufactured in England since 1864. Their formula of fountain pen ink is safe and can be used with all fountain pens. The most famous feature of Diamine is the huge range of colours.\n\nDiamine fountain pen ink is a water based ink, perfect for any brand of fountain pen, also recommended as the only choice for Vintage Pens.\nDiamine fountain pen inks are completely non-toxic and offer excellence in free flowing ink, we offer one of the largest colour ranges in the world.\nDiamine fountain pen ink can also be used as a starter for calligraphers who prefer non-waterproof ink, the colours can be blended or diluted to give a multitude of effects.\nBy adding a secret ingredient to de-stress the surface, we have achieved a combination of vibrance in colour, with an ink flow which glides over the paper, safe for use in all fountain pens.\nWe believe DIAMINE INKS represents the best choices in the market of fountain pen inks today.