Thanks for your suggestions.

I had been using cleaner and primer interchangeably. I didn't realize
they were different. On this joint I used cleaner or sandpaper.

From Oatey's web site I found dry time below 50F for a 3" pipe is 12
hours for 10% of rated pressure and 20 hours for 100%. I calculated the
wet test pressure to be 2.6 psi; it has 6' of water above the joint.

I tried RicodJour's vacuum and bead suggestion. It sounds like a great
idea. Since the pipes are plugged for the wet test, I put a small board
on the remaining opening at the top of the pipe. I opened a drain an
easily hooked up my shop vacuum before apply some glue to the joint.
I'll test it after it dries.

....old-ee