Rohrer & Klingner Dokumentus Waterproof Fountain Pen Ink, Dark Blue, 50 ml
Dokumentus is the world's first fountain pen ink conforming to the resistance requirements of DIN ISO 12757-2. It has been tested by an independent standards body (Papiertechnische Stiftung Heidenau) and certified that this can be used by registrars for official documents.
New technology and high quality raw materials used to formulate this new pH-adjusted ink guarantees permanent and archival writing. Comfort of writing with a fountain pen was the main focus of this new product development. 50 ml bottle (about 1.7 ounces). Rohrer & Klingner writing inks are suitable for all fountain pens, quill pens and calligraphy utensils.