Agfa DDR (OrWo) changed their name in 1964 when Agfa (Leverkusen) merged Gevaert (Belgium). ORWO (ORginal WOlfen) were paid in a lot of DM to do this.
The trade mark
Rodinal seems to be difficult now. So in that way it's renamed to
R09 one shot in most countries.
There are some differences in the R09 Calbe (former ORWO chemical plant, indeed town Calbe on the river Saale) and Rodinal (Agfa chemical plant Vaihingen-Enz).
Foma (Cz) had their chemicals from Calbe (DDR) in the past. In the end of the 90's they also merged
Foton (Bydgoskie Zakłady Fotochemiczne FOTON) a Polish photochemical factory. W is a shortening from Polish word "wywoływacz" (developer), and especially the W27 Excel is known as Xtol (Kodak) copy.
Since two years Foma made a change to Rodinal too, sold under R09 NEW (Fomadon) in different type 250ml bottles. However to all problems in licence, name of Rodinal they are maybe forced to go back to the R09 Calbe version. So for end users it will be difficult to determine what is in the bottle.
Here some examples of Rodinal and R09 (Calbe/old Fomadon R09). Test film: Rollei Retro 100 / APX 100 (production Agfa Photo 2005).
Also a comparision of old Rodinal (Agfa - 2003) and Rodinal A&O, 4 years later.
Rodinal 1+25 - Retro 100, 1/3 of a 35mm negative.
R09 1+20 - Retro 100, 1/3 of a 35mm negative.
Rodinal (new). Rodinal 1+25 - Retro 100.
Rodinal (4 years old). Rodinal 1+25 - Retro 100.
You can see that R09 produces a tick more of grain in combination of the reference film, APX 100 (new) - Retro 100.
You can also see there is not much differences in new or older Rodinal. When it's really new it's clear and a bit Yellow. When it's 4-5 years old it's dark Brown, almost Black. There will be also some solid crystals on the bottom. Not a problem if they are not going into your developing tank.
Rodinal (from 1891) is a very interesting developer, almost
magic and suitable in a lot of different concentrations for different type films. Somewhere in the 70's Agfa changed from glass to HD-Polyethylene (Silar) plastic bottles. Well known are the 125ml and 500ml packings. In the near future Maco (Rollei brand) will also offer a 300ml softpack
R09 one shot Rodinal version.
Best regards,
Robert