What ink is better for dipping pens?

Ordinary ink can be used, but ordinary black ink is generally Greek, which is not deep enough and waterproof. Practice can use carbon ink, ink can also be used, it is dark, but it is not waterproof. Official works can buy special comic ink, or there is a kind of Huguang painting ink that is good (black waterproof) and has a good cost performance, about 4~5 yuan. Clean the nib as soon as possible after use. I hope it helps you.