[alt-photo] urgent gum clearing question
juliansmart at virginmedia.com
Fri Aug 19 19:21:26 GMT 2011
I have found myself needing to clear dichromate stain from my gum prints for the first time. The trouble is I need to do them in the next 8 or 10 hours and only have Sodium Sulphite or Sodium Carbonate available as a possible clearing agent. Can either of these be used and if so what dilution etc should I use?
Thanks in advance,
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