Pen & Ink No-Shellac India Ink for Fountain Pens This ink by Pen & Ink is made specifically for fountain pens, 30ml bottle It does not contain shellac; an additive in many other inks that clogs fountain pen tips This ink is permanent and lightfast and can also be used with dip pens It comes in a glass bottle that has a special opening for filling ink converters and for dipping pens without spilling