We wanted to see if the Noodler's bullet proof fountain pen ink was really bullet proof.
We ran the test with the inks listed.
This is only a minute or so after adding tequila to the bin.
We did not have any alcohol so we used what we had on hand.
See the next picture to see the results of the tequila and water tests.
Noodler's Polar Blue Bullet Proof
Waterman's South Sea Blue - I really like this color
Lamy Blue
Pelican Brilliant Brown
Generic Ballpoint Black
Retro 51 Ballpoint Black
Sharpie Black
Fake Sharpie Pink
Plus three other pens