[albada]

I am not aware of any published formula for an improved version of DS-10. RS sold his formulas to a company who was manufacturing them under their own name. IIRC, the improved version was said to use a chelating agent different from the salicylic acid/triethanolmine mixture.

I thought the salicylic acid was a chelating agent (for iron?), but I'm wondering why the TEA is in there, considering that there's plenty of alkali in the 75 g of sulfite. Is TEA also a chelating agent for something? Or could the TEA also perform a role in development?

I'm wondering if the salicylic and TEA can be dropped if distilled water is used.

Mark Overton