Re: Newbie in lith print
From: "Christina Z. Anderson" <zphoto@montana.net> Subject: Re: Newbie in lith print Date: Sat, 09 Dec 2006 08:05:11 -0700 > Ryuji, I revisited that post of yours and it looks like a > good formula in that the ingredients shouldn't be hard to > find. I assume trisodium phosphate is the same as that at a > hardware store or do you think it needs to be photo grade? > The hot is problematic in our student darkroom, though, as > is the short life. If trisodium phosphate is the sole ingredient of the package you find in a hardware store, you can use it. There are some "trisodium phosphate" products that are not trisodium phosphate. They usually say "substitute" or something in very small print, and they usually use silicate, carbonate, or some combination of others. I'd recommend to stay away from them. Also, potassium carbonate (about 50g/L), or a combination of sodium carbonate and sodium hydroxide may be used. There are several people who tried these substitutions with good results. I may be able to get a summary of these variations if there's sufficient interest. (I guess there is.) Ryuji
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