Emulsion side water marks?

[Aidan Gravelle]

Hi I hope all is well.

I keep encountering what appears to be stains or water marks on the emulsion side of my film. It seems to only show up in the drying process. I have had this issue on and off and it is quite frustrating as I have changed nearly every variable. My process is as follows.

(All steps are done with distilled water)
Develop
Stop 30 seconds
Fix 4-6 Minutes
hypoclear 3 Minutes
Ilford Wash method (I do 15-25-40)
Final Rinse in distilled water
Hang to dry

I have tried Edwal LFN, Photo Flo, and no wetting agent and still get these marks. They are never on the base side though. They come and go, and I have absolutely no clue what causes them. The only other thing I can think of is potentially the low humidity, but I haven't heard of others having this issue.

I have provided images below of some recent scans. I cropped in on the sky where it is most noticeable. The last image is of an exposed piece of film where the marks are the worst.

 

[MattKing]

Humidity - or lack of it - when you are hanging the film to dry.
You need to have a drying environment where the air isn't too dry.
That and a carefully mixed wetting agent.
What film is it, and what format?

 

[Aidan Gravelle]

Humidity - or lack of it - when you are hanging the film to dry.
You need to have a drying environment where the air isn't too dry.
That and a carefully mixed wetting agent.
What film is it, and what format?

35mm Kentmere Pan 200 is the film shown in these images. However, this seems to happen with all types of film. My question is how humid does it have to be? The average indoor humidity here is 20ish percent.