Hmmm.... I routinely store Xtol in full 1 liter bottles in a fridge. I take them out several days before I use them. I haven't noticed any obvious problems in my negatives from doing this, but I didn't know that the sulfite precipitates out. My bottles aren't clear, so I wouldn't be able to see it. I'm not really a chemist, but doesn't sulfite act as a preservative? If so, then the fact that it precipitates out doesn't sound like a good thing. Also, I'm guessing that the lower sulfite level might impact the apparent size of the grain.
Originally Posted by albada