Ink in a 100ml PET bottle for fountain pens and everyday use. This ink has been specially formulated for use with fountain pens and rollerball pens. It primarily consists of water, a humectant to prevent the nib from drying out, and a preservative to maintain its quality over time. The ink is finely filtered to prevent clogging of the pens. It is also water-soluble: when mixed with water, it provides a delicate and uniform gradient of color. Applied with a brush, the ink enhances your drawings. This ink is suitable for fountain pens, rollerballs, felt-tip pens, reservoir brushes, glass pens, reed pens, brushes, goose quills, and pen holders. The dyes used have been carefully selected to offer the richest color palette available on the market.