I have had it set up like a rock after in a month in the frig, found out you aren't supposed to put it in the fig, had it set up in couple of weeks or months in the shop over and over temperature didn't seem to matter. I got mine form the Nelson Paint Co.
I don't keep any around now, if I need some I bum some off my buddy Darrin, he buys in quarts or gallons, I forget which.