These cartridges refill Procyon, Preppy, Prefounte, Curidas, and all other Platinum cartridge pens. They also work in Kuretake brush pens that use fountain pen refills. They will likely not work with other brands, since Platinum uses a distinctive format for...

These cartridges refill Procyon, Preppy, Prefounte, Curidas, and all other Platinum cartridge pens. They also work in Kuretake brush pens that use fountain pen refills. They will likely not work with other brands, since Platinum uses a distinctive format for...

Platinum Carbon Ink is our recommendation for those who need waterproof, permanent fountain pen ink. Most fountain pen inks are made with dyes, which typically are water-soluble and prone to fading over time. Carbon Ink is made with extremely small...

These cartridges refill Procyon, Preppy, Prefounte, Curidas, and all other Platinum cartridge pens. They also work in Kuretake brush pens that use fountain pen refills. They will likely not work with other brands, since Platinum uses a distinctive format for...

These cartridges refill Procyon, Preppy, Prefounte, Curidas, and all other Platinum cartridge pens. They also work in Kuretake brush pens that use fountain pen refills. They will likely not work with other brands, since Platinum uses a distinctive format for...

These cartridges refill Procyon, Preppy, Prefounte, Curidas, and all other Platinum cartridge pens. They also work in Kuretake brush pens that use fountain pen refills. They will likely not work with other brands, since Platinum uses a distinctive format for...