• Rohrer & Klinger's Dokumentus ink is the world's first certified fountain pen ink for document use according to ISO 12757-2 
• Tested by the Paper Technology Foundation in Heidenau, it can be used by registrars for official documents
• Waterproof, non-fading, unerasable and PH-adjusted 
• New technology and high quality natural materials guarantees permanent archival writing
• Replace the cap of your fountain pen after use to prevent blockages in the nib

Waterproof inks can cause clotting in fountain pens and in order to care for your drawing and writing equipment we recommend treating them with Rohrer & Klinger's Reiniger fountain pen cleaner, available in 45ml bottles. 

About the Brand:

Founded in 1907, Rohrer & Klingner have been producing beautiful hand-made inks with traditional recipes that use specially treated water, natural ingredients and brilliant colourants, as well as products for etching and lithography.