Pushing Rollei Retro 100 -> 400, dev info ?

[hans voralberg]

I was "forced" to push the film since I need to shoot and the ambient is rather dim. But I cant find any dev info on pushing this film. Any1 have try this before, I just ran out of developer as well, and thinking of trying Rodinal, so info with that would be great. And is the APH09 from Adox the same as normal Rodinal, just in concentrate form ?

 

[alinCiortea]

It is perhaps no longer an issue for you (giving the date of your post), but this is a "cure-all" method as far as I'm concerned.
P. Lynn Miller has a very simple and effective method for both box rated and pushed films, described here.
I've only tried it three times as I'd only heard of it a week ago, but it worked with Acros 100 120 pushed one stop and developed 'normally', Rollei Retro 400 @ box speed and a Ektachrome E200 (expired, pushed one stop and kept in all the wrong conditions since exposure - the base looks very dense but scans well, probably from inadequate rinsing, or maybe this is what happens when you're developing colour positive in rodinal 😀)

In other words, this developing method probably works for any film there is, as long as you adjust the dilution and times according to the situation.

Best regards!