Quote Originally Posted by rongui View Post
"McCormick Assorted Neon Food Colors" has 4 dyes in the kit. One of the bottles is FD&C Red #3 and from my research on the net is erythrosine.

Hope this helps,
Well, this is what I found, and I just coated a piece of paper using it. I had just one drop to 3ml of coating solution and it made the almost transparent sensitizing solution much easer to see and coat.

Now I am wondering if the red/orage color is going to cause an increase in contrast by blocking UV light? Will have the answer soon as I am about to expose the paper.