Quercetin Chalcone develops like Pyrogallol

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relistan

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You can always increase development speed by either increasing alkalinity or by adding a solvent. Excessive fog is the only limit.
 

relistan

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You can always increase development speed by either increasing alkalinity or by adding a solvent. Excessive fog is the only limit.

I should have said that the development time was encouraging because Alan's testing with quercetin and Metol showed it to be slow. It means that even at this pH we were almost certainly seeing superadditivity.
 
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