Perfect for removing dried ink from calligraphy and fountain pen nibs, feeds, and brushes. It is also used as a rinse during Calligraphy writing sessions or to flush and soak pens for thorough cleaning. Details: - 30ml glass bottle with dropper. How to use: - Decant a small amount of the solution into a small jar or receptacle. Rinse nib briefly and dry thoroughly. For dried-on ink, leave your nib to soak in the solution, the rinse and dry as usual.