Description Platinum Chou Kuro fountain pen ink 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. The 1st 1000 sets will include the Chou Kuro bottle plus a silver converter, 250ml purified water for cleaning, a cleaning eye dropper and an instruction manual. Subsequent shipments will only include the bottle of ink in the standard packaging. Having trouble deciding between colors? Use our Ink Comparison Tool to quickly and easily view different colors side by side. We offer Free Shipping on all orders over $50 for US customers, and for orders over $250 for our Canadian customers.