The company started operations in 1864 when the company was founded by T. Webster and Co. in London. Since 1925 they have been located in Liverpool and the company name was changed to Diamine in 1964. Diamine has made private labeled inks for many companies. Both Old English and New Century Fountain Pen ink by Diamine come with many choices of colors. These inks are Non Toxic and extremly free flowing of this ink is seen by many as the only choice for Vintage and modern pens.
Diamine Registrar's Ink is permanent and waterproof archival quality ink as used by Registrars and the Clergy for signing official documents in England. Safe for fountain pens but due to the acidic nature of the formulation it is recommended that pens are flushed through after use as a precaution against corrosion and leave pen to dry properly before refilling with Registrar's ink to prevent the ink becoming diluted with water. The color is a deep blue-black but eventualy turn black after drying.