Rohrer & Klingner Documentus is the world’s first fountain pen ink conforming to the resistance requirements of DIN ISO 12757-2.
It has been tested by the “Paper Technology Foundation” in Heidenau, an independent standards body, which has certified that this ink can be used by registrars for official documents. Rohrer & Klingner Documentus meets the resistance criteria of erasure, water, light, bleaching, ethanol, hydrochloric acid and ammonium hydroxide.
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.
Just make sure to use replace the cap of your pen after use to prevent blockages in the nib. Beyond this no special care is needed.
Note: The display on your screen may not accurately reflect the actual colours