Tiny white spots on TMY in Tmax RS - any advice?

[Phil Hudson]

I'm developing TMY sheets and 120 rolls in a small tank with TMax RS developer and I'm getting very small white spots on the negative (ie tiny emulsion "pinholes") under a 10x lupe. It doesn't happen with TMX using the same method. Any ideas what might be causing it?

Thanks in advance!

[Gem Singer]

Acid stop bath?

[Phil Hudson]

Thanks Gem - I am using an acid stop bath. Would this make a difference?

[JBelthoff]

It depends on whether there is any carbonate in your developer. What happenes is when a developer contains sodium carbonate, used to increase the pH of the devloper, gets placed into an acid bath - carbon dioxide gas bubbles get released which can cause blistering in the emulsion. This would be a pin hole.

A plain water rinse to replace the acid stop bath should fix your problem assuming that is is a pin hole...

[Phil Hudson]

Thanks John - I'll give plain water a try.