The iconic J. Herbin "D" bottle — named after the old French unit of measure "la Demi Courtine" — holds 30ml of fountain pen ink in an elegant glass vessel with a built-in pen rest. It's the bottle that launched a thousand letters, and the formula inside hasn't needed to change much since 1700.

Water-based, pH-neutral, and made with all-natural dyes, this ink flows smoothly through fountain pens, rollerball pens, glass nibs, and dip pens without clogging. It's also aquarellable — dilute it with water and it produces a delicate, even colour gradient, making it a favourite among calligraphers and watercolour artists as well as writers. Available in an extensive range of colours, each one crafted in France with over 350 years of expertise.

Small Details, Big Difference

Smooth, clog-free writing: Finely filtered ink flows consistently through any nib, from fine fountain pens to broad glass dip pens.

Aquarellable for artists: Diluted with water, the ink creates beautiful, uniform colour gradients for watercolour effects.

Built-in pen rest: The bottle holds your pen while you write — a practical, elegant detail for desk-side refilling.

Details

Volume: 30ml
Ink Type: Water-based, pH-neutral
Dyes: All-natural
Properties: Lightfast, fast-drying, aquarellable
Compatible with: Fountain pens, rollerball pens, dip pens, glass nibs, felt pens, brushes
Made in France