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B/W negative reversal for Ilford films
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02-06-2008, 03:38 PM
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Photo Engineer
Join Date: Apr 2005
Location: Rochester, NY
Posts: 14,190
If you need sulfuric acid, use battery acid from the auto store. In the US it is 35% - 37%. Or, you can get the 48% acid from the Formulary.
PE
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