Acme fountain pens fit any brand of standard international-sized ink cartridges. Colorado Pen and Pelikan offer a wide range of ink colors in these cartridges. You may opt to use the ink converter that came with your Acme fountain pen. Then you can choose from any brand of bottled ink, including the huge Colorado Pen bottle, specially formulated to clean as you write.
If you are using the rollerball point on your Acme, click on the Rollerball refills for Acme window below. The options are amazing.
Visit our Refill University if you would like a five minute education on pen refills, ink types and points. Customize your writing experience with all the ballpoint refill options offered by Colorado Pen.