@pictorialplanet
https://www.bellinifoto.it/en/prodotto/chimifoto-ornano-gradual-st20-film-developer/
Has anyone any idea what this developer is?
It seems like a PQ-type (can't find any MSDS except for an old version with Hydroquinone and 4-aminophenol =p-aminophenol).
Questions: it seems new-iah The name seems to be repurposed. What formula lies under the "name" ST20?
And a question a bit broader: P-C Vs P-Q: What difference does the increased level of toxicity make?
#analoguephotography #filmisnotdead #chemistry #bwphotography


