Ink in a 100 ml PET bottle for fountain pens and everyday use. This ink has been specially formulated for use with fountain pens and rollerball pens. It mainly 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 color gradient. When applied with a brush, the inks enhance 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 specifically selected to offer the richest color palette on the market.