A front-facing image of the Platinum Carbon Ink bottle. The label is fully visible, featuring the "Carbon Ink" logo in gold lettering against a black background. The glass bottle has a distinctive shape, and the deep black ink inside is prominently displayed.
A Platinum Carbon Ink bottle placed next to its original packaging. The box is black with gold and white Japanese text, complementing the bottle’s gold and black label. The bottle's signature curved shape is visible, along with its black screw cap.
A bottle of Platinum Carbon Ink is positioned at a slight angle, showing the left side of the bottle. The ink is housed in a uniquely shaped glass bottle with a black screw-on lid. The label is gold and black, featuring the words "Carbon Ink" prominently in the centre.
A front-facing image of the Platinum Carbon Ink bottle. The label is fully visible, featuring the "Carbon Ink" logo in gold lettering against a black background. The glass bottle has a distinctive shape, and the deep black ink inside is prominently displayed.
A Platinum Carbon Ink bottle placed next to its original packaging. The box is black with gold and white Japanese text, complementing the bottle’s gold and black label. The bottle's signature curved shape is visible, along with its black screw cap.
A bottle of Platinum Carbon Ink is positioned at a slight angle, showing the left side of the bottle. The ink is housed in a uniquely shaped glass bottle with a black screw-on lid. The label is gold and black, featuring the words "Carbon Ink" prominently in the centre.

Platinum Carbon Ink - Waterproof Pigment Ink

¥4,800

Ultra-dense black, maximum permanence, professional waterproof benchmark

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Platinum Carbon Ink is renowned for its deep, archival black and exceptional permanence.

Crafted in Japan using ultra-fine pigment particles, it delivers a rich, dense black that holds its ground confidently under watercolour washes. It’s a favourite among artists and illustrators for good reason.

Performance & care – a quick heads up
Because this is a pigment-based ink, it behaves a little differently from our dye-based fountain pen inks.

It’s compatible with all of our pens – The Lumos, Wren, Field Mouse and our Fountain Pens. If you’re using the finest fineliner tips in the Lumos (0.4 and below), here are a few helpful pointers:
  • If you won’t be using your pen for more than a few days, remove the tip and reservoir, rinse thoroughly with water, and allow everything to dry completely before refilling.
  • Avoid storing your Lumos vertically (tip up). Ink can flow away from the nib, leaving it less saturated and more prone to drying out – even when capped.
  • If pigment ink dries inside a tip or reservoir, it can’t be revived due to the pigment particles. Simply replace the tip and reservoir and you’re back in business.
A little care goes a long way. In return, you’ll get crisp, permanent, archival black lines.

*Waterproof? Almost. This ink is highly water-resistant once fully dry. It will hold beautifully under a light to moderate colour wash. Very heavy, very wet overwashes may cause slight movement, so we always recommend testing before committing final marks to the page.
  • Each bottle holds 60ml of ink.
  • Sailor Kiwa-guro is acid-free, non-toxic and vegan.

Shipping costs are calculated at checkout.

For dispatch times, customs details, and more, please visit our Delivery page. Got a question? Just reach out via our Contact form – we’re here to help!

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