Platinum Chou Kuro Black Ink

Chou Kuro is the blackest ink ever created from Platinum in its 104-year history! An ink that is blacker than black, and 46.8% darker than Platinum's famous Carbon Black, this new permanent ink from Platinum is going to set the new standard of what is possible from permanent black ink in the fountain pen market. 

This is a pigment based ink. It is intended for fountain pens but requires more maintenance. We recommend cleaning your pen about once a week when using a permanent ink.