£7 plus VAT for 28.4 ml bottle Registrar's Ink.Designed for use by Ministers and Registrars. This ink is very permanent. Although suitable for fountain pens it is recommended that the fountain pen is flushed through with tap water before each filling, leave pen to dry properly before refilling with Registrar's ink to prevent the ink becoming diluted with water.
If you are looking for a hard working fountain pen, that is resistant to the corrosive additives in Registrars Ink then consider 'The Parson's Essential' in the panel below. Remember to flush out the pen after each days use.
Writes blue but dries black.
Exc VAT and delivery.