30ml glass bottle of Private Reserve Infinity Green fountain pen ink.

The Private Reserve Infinity Ink collection uses the E.C.O. (Extended Cap Off) technology, a new advanced ink formula which allows a fountain pen user to leave their pen uncapped for a longer period of time without drying out.

Your exact results will vary based on your specific pen, environment, etc, but our 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.

These Private Reserve inks are proudly made and packaged in the USA. They are vibrant, smooth flowing, and fast drying, providing excellent coverage. The inks are neutral in pH and offer a great writing experience for any fountain pen.

Yair (Jerry) Greenberg the owner of Private Reserve Inks is proud to announce a break-through in fountain pen ink technology and truly, a game changer for the fountain pen industry. For many years, we were trying to come up with a new ink formula which will allow a fountain pen user to leave the pen capless for a long period of time. Until now, to write with a fountain pen required users to cap the pen often to avoid the ink from evaporating, drying and clogging the feeding system. I am happy to report that after many years of testing we finally aced it. To the best of our knowledge, we are the first and only company to offer this kind of ink.

So, why did we name itInfinity? 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.

Ink Color:Green