clearing dichromate stain
Folks, The usual recommendation for clearing dichromate stain is a 3% or so solution of sodium bisulfate. In her "Condensed Alt Processes" book Christina says "some use 5% sodium sulfite" but that didn't work for me. Do I remember correctly that sodium sulfite plus sulfuric acid makes sodium bisulfate? (My last chem class was 50 years ago.) Also, I have a very dim recollection that a weak hydrochloric acid bath is supposed to work--or have my gray cells misfired? Bisulfite is a mail order whereas sodium sulfite and hydrochloric acid are available within a couple of blocks. There is no sunshine and won't be for many months here in Portland OR. Thanks for any help. Charles
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