Platinum Pen Writing Material Ink Cartridge

Use these colorful, non-toxic Platinum ink cartridges to refill the pens listed under Compatible Products. The blue-black iron gall ink has good waterproofness and archival qualities, but it is also more acidic than normal fountain pen inks. These cartridges are safe to use in any fountain pen, but we recommend cleaning your fountain pen regularly (every 4 weeks or so) to avoid corrosion, especially in pens with steel nibs.