The Private Reserve ∞ Infinity Fountain Pen Ink with the E.C.O (extended cap off) Formula

So, why did we name it ∞ Infinity?

We tested the ink in a pen with its cap off for many hours and the performance was stellar. If you write with the fountain pen intermittently, theoretically, it can be cap-off 'forever'. We offer the ∞ Infinity Ink collection in our beautiful 60ml luxury ink bottle.

Note: Your exact results will vary based on your specific pen, environment, etc, but the testing was pretty consistent to be able to leave a fountain pen uncapped for an hour and to have it start writing back up without issue.