Problem with foma 200 (lots of black spots)

[wupdigoj]

After developing this film (120) I get a myriad of tiny black spots covering the whole negative. They are only visible under a loupe. Depending on the scene, sometimes they will appear in the copies and sometimes won't. I am currently using alternatively rodinal and ultrafin plus. It happens with both developers, but only with foma 200. I also use Tmax 100 (35 mm) and foma 100 (120) and both are fine.
I would like to know if someone has a similar experience and, if possible, how to avoid it. Thank you very much.

Javier

[akela.cz]

Hello Javier,
Probably you have got a film from a bad batch of T200. It is sometimes happens, when T200 is manufactured (bad gelatine ? ).

HD

[Roger Hicks]

Distressingly, this is not uncommon with the Foma 200 roll-film, but it is very rare with 35mm (which I really like). The best guess I've heard is convoluted and dirty pipe-work on the 120 line.

Cheers,

R.

[wupdigoj]

Thanks to all for the quick answers. The temperature is correct, 20 degress (C). I don't remember the expiration date, but the film is certainly fresh. First time I suspected the fixer, but after changing it and seen the good results with other films, I assume it must be a bad batch :-(. Curiously foma 100 in 120, from more or less the same time is perfectly fine.

I have tried overfixing the film and some spots disappeared, but not all. Thank you again

Javier

[morback]

Sometimes I hear people blaming the stop bath for those. Don't know how accurate that info is. I'm not a chemist.