Clean nibs regularly by holding them under lukewarm running water. Do not use any other liquids or cleaning agents. Rinsing is required whenever ink flow is intermittent or has stopped, when the feed system has become blocked, if ink has dried, or when changing ink colour.
To clean piston-fill pens, submerge the nib in water and twist the blind cap to fill and empty the reservoir several times until the water runs clear.
To clean pens fitted with a converter, submerge the nib in water and twist the converter knob to fill and empty the reservoir several times until the water runs clear.