Established in England in 1864, Diamine is one of the world’s premier ink manufacturers. Since its inception, the company has continued to use the most traditional methods to ensure one of the highest of quality inks on the market. Given the quality of the ink, it is suitable for use in all brands of pen, both modern and vintage. Notable individuals to have used Diamine ink include presidents Obama and Medvedev when signing 2010’s nuclear arms treaty. With dozens of colours in its range, Diamine inks are water-based, acid-free and non-toxic. The 30ml (1.06oz) bottles are a high-quality plastic and perfectly lightweight for the smaller volume.