Has my Rodinal gone bad?

This thread reminds me of the song "does your chewing gum lose it's flavour on the bedpost overnight' ;-)

Ronald Moravec said:

I ran a test from 1898 to 2008. New Rodinal was decanted from white plastic to brown glass bottle as new. I did a test strip exposed under studio lights for uniformity every six months. Strips were identical for ten years when they started to lighten slightly.

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MartinCrabtree said:

Man how old are you???

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I wonder if Ronald used a quill pen to record his results in 1898

MattKing said:

I wonder if Ronald used a quill pen to record his results in 1898

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I don't know but do know that there is a portrait of him in a loft whose visage is getting older by the day

pentaxuser

Part of the confusion here is that R09 was the formula number for Rodinal, what is often sold as R09 & now APH09 is the pre WWII version of Rodinal, this doesn't keep as well as modern Rodinal which was re-formulated when Agfa merged with Gevaert in the mid 1960's.

Adox Rodinal/adonal is still the same as the old Agfa Rodinal and is still made by former Agfa employees. Because of issues in the US where J&C had registered the Rodinal brand name it had to be dropped, so Rodinal was being sold under various names inc R09 One shot. Luckily Fotoimpex/Adox have managed to acquire the brand name and re-use it.

One problem now is some companies are making substitute versions of RO9 that don't use either the pre-WWII formula used by Orwo/Calbe or Agfa Gevaert. The consequence is it's now extremely confusing, the best solution is to use the Adox Rodinal and know it's the genuine product.

Ian

6 pages to get there....

Ian Grant said:

Part of the confusion here is that R09 was the formula number for Rodinal......the best solution is to use the Adox Rodinal and know it's the genuine product. Ian

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the bottom line!!!! thanx ian

jvo

ah-ha...

Ian Grant said:

Part of the confusion here is that R09 was the formula number for Rodinal......the best solution is to use the Adox Rodinal and know it's the genuine product. Ian

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the bottom line!!!! thanx ian

jvo

Mick Fagan said:

I would suggest you do use it again, but with a test film. Otherwise I don't think you'll ever know.

Mick.

Edit, we will never know either.

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I recently tested my heavily crystallized R09 one shot, after thinking it might have lost its effectiveness, based on a previous roll I had developed with it. It actually seems to work absolutely fine. I most probably made some mistake with that roll, which I need to diagnose, so I won´t repeat. I am writing this just to add to what many others seem to have experienced as well: crystallization, even heavy one, does not seem to be indication of bad developer for Rodinal/R09 one shot.

NB23 said:

R09 goes bad very quickly. It is not the Rodinal that we all know.

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Realy?

A couple of weeks ago I used the last drop from bottle opened 3 years ago. It worked as new.