Quote Originally Posted by DrPhil
Negative size is 4x5. VC silver gelatin paper. Ilford MGIV RC and Fiber to be exact. Using a Cold Light Head (currently with a busted bulb!).
Here is what I would suggest, assuming development in tubes with gentle but constant agitation at 72 degrees F, using the 1:1:100 dilution of Pyrocat-HD. I don't actually test for VC papers so the following recommendation was derived by extrapolation from graded paper data. But it should serve well for initial tests.

N-1, or SBR 8.5, 5:45 minutes
N, or SBR 7, 8:00 minutes
N+1, or SBR 5.5, 15 minutes.

Sandy King