FX-37 Help

[Alan9940]

Went to develop some film this morning and I noticed some sort of particulates floating around in the developer. For lack of a better description, it looked a bit like undissolved Hydroquinone; though each particulate was larger than any developer crystal. This issue was from a 250mm brown glass bottle that I've been using since mixing a 1L batch a few weeks ago; therefore, there was some air in the bottle as it was used. I checked my smaller 125mm bottles that I filled to the brim and have not touched in 3 weeks, and they're fine. Anybody have any idea what's going on here? Does FX-37 have some sort of strange response to air? I went ahead and developed the film and it looks fine so I'm clueless as to what going on. FWIW, I'm sure all chemicals were dissolved properly when I made up the stock solution.

Any insight would be greatly appreciated.

Best regards,
AlanH

 

[Gerald C Koch]

I assume that all the bottles were stored similarly. FX-37 has a rather unremarkable composition for a PQ developer. Off hand I don't see any specific chemical that would come out of solution. Try warming and gently agitating the solution. If this does not work then filter off the crystals before use.

 

[Alan9940]

Yes, all bottles were stored similarly. I didn't think of warming it...I'll try that. Thanks!

Best regards,
AlanH