Rodinal is a developer, I you want to leave it to stand . . . . . . then don't open the bottle
It's just a normal developer use it as any other once dilute, people use it in Jobo's I do but my JOBO tank was made by Noah Jobo when he walked out of the Ark, 2000 Series designed for Inversion.
There are times for Rotary processing floating around.
It's all rubbish I'll take if off you for $25 as long as you pay the postage to Turkey
Send me the $25 plus I'd guess about a $100 by Paypal and I''ll safely dispose of the film properly. . . . . . . . . . . through my cameras . . . . . .
I'd sell some of it fast while it's desirable and keep & use what you think you'll use, over-estimating, the colour films need thought as they store less well and if you don't plan to use them sell them.