The pen uses Platinum ink cartridges, but with the special Ink Cartridge Adapter (not included) it is also possible to use the Standard International ink cartridges. You can also use a Platinum Gold/Sliver converter (sold separately) to use bottled ink.

Equipped with the Slip & Seal Mechanism that offers a smooth writing experience at any time

Platinum’s Slip & Seal Mechanism, which is one of the main features of our representative #3776 Century fountain pen models, is also employed for Procyon. This unique mechanism enabled a pen with a screw-type cap to offer complete airtightness using the inner cap. It provides smooth writing with fresh ink at any time.