Noodler's Ink Fountain Pen Bottled Ink, 3oz - Kung te-Cheng

Kung Te-Cheng is my favorite Noodler's blue ink: rich, dark, but still prominent blue, with the four qualities that the best Noodler's inks possess (according to the company's information sheet): (1) "UV resistant, bleach resistant, etc." (2) "Archival, fade-resistant" (3) "Impervious to lasers, alcohol, solvents - ideal for security documents" and (4) "Partially or fully waterproof". Indeed, Kung Te-Cheng seems to be fully waterproof, as my test exposing the dried ink to water (well, to saliva on my thumb) shows it not to smudge. If you like a darker blue than most of the Noodler's offerings, that won't fade or wash out, then I highly recommend this one. Just be careful! The bottle is filled to the top, and if you spill it you'll face quite a challenge cleaning it out of whatever it soaks into.UPDATE: I'm having problems with this ink clogging my pens. So I'm taking 2 stars off. No other Noodler's ink that I''ve tried has this problem like this one does. I can see why this particular ink isn't more popular, given this problem.

Kung te-Cheng is a pleasing purple-blue ink which is archival and, as Noodlers terms it, Bullet Proof. When dry It will smear slightly if immersed in water but it still remains quite readable.

I love love this ink. Beautiful dark blue. And it is a permanent ink.

I am super happy with my purchase, it has the shade of royal blue i wanted, ink flows nicely, not a thick ink. Perfectly good on regular paper and the cheapest copy paper too. Recommend it. Probably a good investment to buy a pen like playinum preppy that keep their nibs wet since the ink is permanent.