what is this Liquid layer on top of archival ink?
I had an archival quality black ink for illustration. The label says it's "*waterproof drawing ink*". I didn't use it for years. And today as I opened the bottle, I found the total paint particles have dried up at bottom leaving a watery **almost** transparent liquid on top. That liquid smells strong and works wonders as a glazing liquid. Anybody has any idea what it might be?*p.s. Let me know if this is the wrong forum for this btw. In that case, please forward the question to Arts and Craft section. This is related to design and illustration. Hence posted here.*