Increasing potassium hydroxide concentration in rodinol.

[Altaf Shaikh]

Anyone try to increase the potassium hydroxide concentration in rodinol, and if any what where the results?

[John Hicks]

I'd expect it to make the concentrate stronger, but may cause problems with prec ipitates etc. Why do you want to do this?

[Altaf Shaikh]

To see what would happen

[David A. Goldfarb]

Take a look at this page, which has some important precautions about potassium hydroxide, but doesn't say what its function is exactly in Rodinal.

[David A. Goldfarb]

"></a>Eeek! Left out a quote mark there. That should be: Take a look at this page, which has some important precautions about potassium hydroxide, but doesn't say what its function is exactly in Rodinal.

[Ed Buffaloe]

Potassium hydroxide is the alkaline agent in Rodinal. Increasing it will increase the activity of the developer, probably making it even more contrasty. I doubt you will see much difference from simply developing in Rodinal (1:25). My preference has always been to use Rodinal at higher dilutions such as 1:50 and 1:75, so I wouldn't bother with the hydroxide myself. But you never know until you try.