Hello all, I have been developing for a while usually using rodinal 1/100 or 1/50 and occasionally promicrol. I feel the need to stretch my developer wings and try out some new mixtures.

This being said i am about to embark on a bit of an odd road trip across eastern europe and will need to be developing under some slightly trying conditions, my main concern is temperature i would ideally prefer not to carry around my bath and thermostat heater thing so was hoping you could recommend some developers that work well with mid iso film (most likely tri-x 400) but dont really care too much about temperature. Oh and it would be useful if they lasted a fair amount of time mixed in a large bottle for one shot.

I dont ask for much huh ?