Platinum Ink Cartridges - Pigment Blue (Pack of 10)

Pigment Blue, which features a pigment-based formulation that is highly water-resistant and suitable for use by artists and anyone who may want additional permanence. Though these inks are intended for use in fountain pens and therefore “safe”, for best performance and to avoid clogging be sure to clean your pen thoroughly prior to changing inks, as pigmented inks often do not mix well with other types of ink.