Quote Originally Posted by Thomas Bertilsson View Post
While it isn't perfect, I usually use boiled water to get as much of that air out of the water as possible before I use it. I imagine it helps, but don't really know how to prove it. I know I don't get air bells on my negatives at all, even when I agitate as seldom as every 5 minutes.
Thomas;

Look at the film as it washes. You will see tiny bubbles on the film caused from air entrained in the wash water. This can cause uneven washing with resulting dots of brown from retained hypo. We called it "measles". So, some sort of agitation should be used even in the wash. I just remove the reel from the tank and tap it a few times, then return it to the wash tank. I do this every time I see the bubbles accumulate.

This is not well known.

PE