Isomars Waterproof Drawing Ink with Dropper – 35ml | Black India Ink for Calligraphy, Art, Technical Drawing | Fade-Resistant & Quick-Drying

Nice product. Dark black ink. Like it

+This is dark waterproof ink.+Unfortunately if you don't refill your fountain pen daily, it will definitely dry and clog the pen.+Once clogged its very difficult to clean and restart the fountain pen.+Again it's ok for people who refils the pen daily like students but not for people who refils once in week.

The ink is completely waterproof

Very nice, easy to use. Helpful for nib work. I really liked it and would recommend it to the art lovers. Go for it.

Ink is not very good and too watery

Ink bottle neck should be more wider unable to insert pen nibs . Ink is professional love it

The media could not be loaded. This is the best black ink I used so far. The colour is pretty dark.I tested it out on a watercolor paper with a dip pen. I love the smoothness and richness of the ink. I saw some of the questions about filling it in a brush pen. I had a empty pental brush pen. Filled its cartridge with this ink. Now it is writing like when I bought it.The ink is indeed waterproof when it's dry. In case if you are wondering after watching the images, the paper I used is watercolor paper. The ink bled through when I wrote. Not when I poured water on it.I'm really happy with this ink. Hoping to buy their set of coloured inks in the future.Hope this helps!

Very good,dense,easy to mix with water and it works well.