Quote Originally Posted by Oren Grad View Post
My glass and film are always dry. But the humidity in my darkroom varies substantially with seasonal conditions and with the number and size of open trays in a printing session. It's not something I can practically control.

Other than AR coated glass, which I've experimented with extensively and which has its own issues, I have yet to find an "anti-glare" glass that doesn't either generate Newton's rings in my darkroom or impart its own texture to smooth-toned areas in the print. If you can recommend a specific brand I'll be happy to try it to see whether it's any different.
I don't have a brand name, I normally just use what the framer carries and have no problems. When printing I keep my darkroom at 65-70% RH and haven't seen a Newton's ring in at least 20 years.