Sailor Fountain Pen Nano Ink Cartridge - Ultra Black - Pack of 12

This is not just high-quality ink - it's an excellent dark black with great flow, that in my tests I find to be waterproof. Wow. A contender against Noodler's black... except with a smoother, juicier flow!

BEST INK EVER.

This ink is very interesting. It will make your pens write like a dream. It goes on nice and smooth, and doesn't feather, no matter how junky your paper is. It's light proof, as well as waterproof. If you want something to withstand anything you throw at it, this is the ink. It cleans off very easily with water, but does tend to leave a residue that can just be wiped off. It does have a unique smell, but if you've used any acrylic paints, it's 1/100 of that smell. It's pricey, but for those who demand it, there are no substitutes.

I don't really recommend this ink.

This ink sometimes stays on your nib and does not go away,

so be careful if you are going to use it for an expensive fountain pen.

And the smell is too strong, it smells like some kind of dangerous chemical.