Sepiareverb, what was the nature of the issues you had with PhotoFlo that others didn't cause? By the way, I thought Sistan was not a wetting agent, but an anti-silvering protective solution (potassium thiocyanate I think), but I have no experience of it. Got a bottle, though...
PS. MSDS lists Potassium thiocyanate as 15-20% and Polyoxyethylated Octyl Phenol as 5-10%.
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