Uncle Dick
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I posted the same question 2 years ago regarding oxidised Rodinal and everyone assured me that it was absolutely fine to use.
(there was a url link here which no longer exists)
At least they recognize that it still exists. One of my local shops insists that Rodinal is no longer produced. When I told them that I ordered some from Freestyle last week they said well, it must be old. Agghh. I tried to tell them that's it's still being produced but they don't believe me.
While production stopped in November 2005 it was, of course, re-started. Agfa Werk Vaihingen (Rodinal's home) was taken over by A&O. A&O's program included most of the Agfa chemical program. A&O early this year sold the factory to Connect Chemicals Production & Services GmbH. Different owners but Rodinal continues to be bottled. Rodinal is filled into plastic bottles using inert gas. This means that unopened plastic bottles still have very long shelf-lives. Once opened, however, this bottles have less than glorious properties and Rodinal is probably-- should the need arise for rests to last longer than a few years--- best re-filled into full glass bottles.They are right to the degree that, I believe, Rodinal production had been stopped at some point, but wrong in that it was later re-started.
All the testimony of longevity doesn't explain why R09, which is supposedly the original Rodinal formula, definitely dies and relatively quickly. I never trust the bottom third of a bottle of R09 as that has shown less activity than the fresh bottle.
Dennis
The last bottles of Rodinal I got from Freestyle were very light in color, almost clear.
R09 is not Rodinal. Its perhaps the "original" (Dead Link Removed) but its not the same as Agfa Rodinal. Agfa Rodinal is filled using inert gas. R09 is not. R09 also uses very very poor plastic bottles (much worse, in my opinion, than Agfa's current HDPE packaging). If one wants R09 is last it must be refilled into a quality glass bottle. I would also not discount DDR paraaminophenol inventories (given that the DDR ceased to exist in 1989 that's no less than 18 years).All the testimony of longevity doesn't explain why R09, which is supposedly the original Rodinal formula,
And was it?
Yeah I used it it it was fine.
If I want new bottles to last years, should we keep it sealed or decant into amber bottles?
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