Octopus Certified Document Inks - Black Shark With the square shape and

With the square shape and pristine look of a block of tofu

Cover Colour: Orange / Red / Green / Blue / Purple / Black

shining colors

7 mm nib - Square nib 0

Octopus Certified Document Inks - Black Shark With the square shape andDocument Inks for fountain pens Document inks with ISO 12757 2 certificate in 9 colours The development of our document inks for fountain pens took a total of 12 months. The focus was on selecting and testing the pigments to be used and their behaviour in the fountain pen, the flow properties during the writing process and the use of various additives to achieve the properties required for DIN ISO certification. The result is document proof inks for