Rohrer & Klingner Document Inks (Bulletproof) Diamine The top of the cap

The top of the cap can be used as a tool unscrew the ebonite piston knob for operation

It's one of China's 4 great classical novels and we picked colors out of the buildings and descriptions within this book for this series of ink

Slim and long-shaped nib gives easier control of pen tip when you write

Not only can it be used on stylographs: sketchINK® can be used with quills or brushes as well

Rohrer & Klingner Document Inks (Bulletproof) Diamine The top of the capDOKUMENTUS, SERIES 41 Dokumentus is the worlds first fountain pen ink conforming to the resistance requirements of DIN ISO 12757 2. It has been tested by the Papiertechnische Stiftung Heidenau (Paper Technology Foundation in Heidenau), an independent standards body which has certified that this ink can be used by registrars for official documents. New technology and high quality raw materials used to formulate this new pH adjusted ink guarantees