Walter Glover , Nov 12, 2002; 06:08 a.m.
I recently calibrated TMY in Rodinal 1+100 @ 20º - for a normal range scene the time is 17:20 mins. Contraction is possible and easy but expansion is a worry - N+1 is indicated as being 40:00 mins. TMX would only differ very slightly from this because i have found that due to the compensating effect of this dilution most films require about the same time.
That's tray development and with 10ml of concentrate for every 8x10 sheet that means a litre of working solution per 8x10 or four 4x5s.
After a pre-soak of 2 mins in water I transfer to the developer and give constant agitation for 30 seconds followed by 10 secs every minute. Intervals could be extended to 2 minutes perhaps but I would be wary of bromide drag if the film is vertical and uneven edges if horizontal.