Private Reserve Infinity Extended Cap Off Blue-Black Ink Bottle
Presenting a 30ml glass bottle of Private Reserve Infinity Blue-Black fountain pen ink.
The Private Reserve Infinity Ink series incorporates E.C.O. (Extended Cap Off) technology, an innovative ink formula that enables fountain pen users to keep their pens uncapped for extended periods without the risk of drying out.
While actual outcomes may differ depending on your individual pen, environmental conditions, and other factors, our testing consistently demonstrated the ability to leave a fountain pen uncapped for up to an hour and resume writing without any issues.