Sailor Nano super black ink is a waterproof ink made of high quality material and is extra black.
Posted by Unknown on 21st Mar 2014
but is it economical? This is easily one of the best pure-black inks I've found, but at nearly three times the cost of decent Indian ink it is hardly a cost effective choice.
Still, I will keep on using it.
Posted by Angguguking on 5th Dec 2012
My experience on this product is I found it's really black, but still not as black as Indian Ink. However, it's not "waterproof" as product description.
Posted by aconito on 26th May 2012
Dark black "waterproof", still "bulletproof"
All prices are in USD.