19040 Aircorp Blue-Black

This ink handles water like a champ—I spilled coffee across a page of notes and the writing didn't budge. The 3 oz bottle is plenty for daily use, and the permanence gives me real peace of mind for anything I sign.

The color dries to a rich, deep blue-black that stays put even after I accidentally ran a wet finger across the page. It's reassuring to know my notes will hold up against water and forgery attempts, and the 3 oz bottle has lasted me months of daily journaling.

I spilled a few drops on my desk while filling my fountain pen and the stain sat there for an hour before I wiped it—no trace left on the paper towel, and the ink on the page stayed crisp and dark. The 3 oz bottle is a solid size for daily use, and this blue-black has a nice vintage look that dries