Quote Originally Posted by Ian Grant View Post
No there are only 2 versions on the market.

Genuine Agfa Rodinal as made fom the mid 1960's when the formula was changed at the time of Agfa's merger with Gevaert. This has an excess of Hydroxide and a higher pH and is now sold as Adonal, Blazinal. RO9 One shot etc but it's all made by the same factory.

Then there's the former Agfa Orwo version made by Calbe which uses a pre WWII Agfa formula, has a higher p-Aminophenol content but no free hydroxide and so a lower pH. this is sold as Calbe RO9, APH09.

The problem is that the two versions don't behave quite the same. many German and Continental EU photographers prefer the older version which is why people like Mirko ant Fotoimpex sell and distribute both.

Actually, we are both right.

When I said "several different versions" I meant "several products" as in "sold under several different names" some of which use the old formulation and some the newer, even if all the old ones are made in one place and all the new ones in one place.

The one I have that I bought meaning to try Rodinal again is this one:


and at least until now I wasn't sure which one this is. So you are saying it is the 1960s+ version, not the old pre-war version, correct?