Quote Originally Posted by RobertV View Post
Maybe..... I did 1+150 in testing Tech Pan films and you will find no difference (densitometer) 1 h or 2 h semi-stand. But a higher dilution is quicker oxydized. 1+100 is then maybe on the edge. So 1+50 will then certainly work till two hours.
But on lower temperatures the process of oxydizing is also ran slower.
The difference for my Tri-X results between 1h and 2h was tremendous.

I'll put some 1+50, 1+100 and 1+200 rodinal in open air beakers tomorrow and do a timelapse video with my digital SLR, see how long it takes to oxidise.

Imo, it should be the film thats doing the majority of the oxidation, especially in stand or semi-stand.