Nano-Pigment Fountain Pen Ink, Kiwaguro (Ultra Black)

Made with Sailor's proprietary nano-pigment process, Kiwaguro Ultra Black Ink offers lightfastness and deep, intense blacks with a low-maintenance formulation that fountain pen users love. The carbon black particles in Kiwaguro won't clog your pen; in our tests, we didn't experience the hard starts and messiness that can be associated with other pigment blacks.

Sailor Kiwaguro comes in a heavy glass bottle with square edges and a faceted black cap. The bottle label is made from washi paper and features visible fiber inclusions—an elegant reminder of this ink's Japanese heritage.

Please note that Kiwaguro is not waterproof. 50 mL bottle with cardboard storage box. Made in Japan.