Quote Originally Posted by Kirk Keyes View Post
The rinse water could be extracted with organic solvent using a separatory funnel. Look up the EPA liquid-liquid extraction. Still sounds like a lot of work...

Sensitizing dyes used currently are highly ionic!


The mix is ok, but if you want red only, you have a problem just as an example. And, the dye mix would include acutance dyes and trimmer dyes among others.