AgX;

Indulin blue fails the test of being a sulfonic acid. It has amino groups terminating it and thus is sold as the salt of an acid rather than being the acid itself. IDK how it would transfer compared to the other 2 dyes in the reference given which are sulfonic acids.

It would be nice if all of these dyes were azo dyes as well. Thus we could use one dye set for DT and DB imaging.

PE