Quote Originally Posted by holmburgers View Post
Hey Mssr. Shaffer, I forget now as it's been so long, but what are the possible substitutes for glyaxol. It's purpose is to harden the emulsion, right? Do you think chrome alum would do the trick?

Also, I forget the purpose of the glycerin and potential substitues. Not that it's a chore to get glycerin (http://www.walgreens.com/store/c/afr...118523-product) but I'm getting some Sorbitol for my screen plate stuff and I'm curious if that would work.

Long live Lippmann!
I would think that chrom alum would work, however you'll need to figure out what dilution and time to get sufficient hardening.

I believe that the idea of the glycerin is to re-swell the emulsion. I don't know what sorbitol is, so I can't help there.

Both of these steps are an attempt to keep the developed & dried emulsion the same thickness as the exposed emulsion. The shrinking emulsion will cause color shift or loss color image all together.