River Mantis Member Joined Jan 26, 2021 Messages 48 Location Varna, Bulgaria Format 35mm RF Dec 20, 2023 #1 Why the classic Rodinal recipe (that one with 100 g/L p-AP HCL) asks for metabisulfite which is getting neutralised later instead of a plain sulfite? Has it something to do with solubility?
Why the classic Rodinal recipe (that one with 100 g/L p-AP HCL) asks for metabisulfite which is getting neutralised later instead of a plain sulfite? Has it something to do with solubility?
Alan Johnson Subscriber Joined Nov 16, 2004 Messages 3,288 Dec 20, 2023 #2 See Gerald Koch, post 44 here: Rodinal - original recipe? RobK, thanks for sharing more info!!! www.photrio.com Appears that originally bisulfite solution was used because it was cheaper.
See Gerald Koch, post 44 here: Rodinal - original recipe? RobK, thanks for sharing more info!!! www.photrio.com Appears that originally bisulfite solution was used because it was cheaper.