Rodinal is a lazy persons developer, yawn zzzzzzzzz.
Noel
Since this disaster of my in-law I started doing this as a precaution to damaging my films: prior to any development I use a strip of cut sheet film to test the mixed developer solution - dip the strip in the dev for one or two minutes (in full light) - it should turn black, then throw it away. If it does not turn black, something is wrong...
Sorry I apologise - I forgot I had a bottle in a cardboard box for 25 years, people told me it would be ok so I did not throw it out. Just used it up. When it was empty I bought two bottles to replace it, the second is not going to go off.I'd suggest it is not necessary to do anything difficult with the paraamenophenols, (Rodinal like) they dont need an opaque bottle only restoppered. Agfa used to use a dark glass bottle, with an inner rubber stopper and a covering screw cap to crush the rubber seal further. They stopped this about '75, going to plastic, the plastic was good for >25 years, for a 1/2 ful bottle or mine was - I did not mean to do this test.
The concentrates dont need heating up to dissolve any precipitate, that could very well destroy them.
If you really must decant to another bottle then you need to be sure and take as much of the precipitate as you can get across, the precipitate is in effect the preserative, no precipitate and I think it will go off quickly, but it is a really good experiment if you like risk...
Rodinal is a lazy persons developer, yawn zzzzzzzzz.
Noel
Thanks, but I'll keep using my 5 year old bottle of Rodinal.
Better to throw it out than take the risk!
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