drilled a hole in the top of something like this for the 1/4 in line to go into....pop the lid off... spray into it ...pop the top back on and purge in it. Wipe the shit off the lip so it will seal properly.
I sit it in a skillet of hot water on the stove...on low....which is about 150. It takes a while and big batches are harder to purge....ghetto fab. I leave it there for around 24 hours. Constant agitation would speed things up....stuff like magnetic stirring hotplate comes to mind....but I have no need for anything on that scale. I do little batches that clean up easy....Its for personal....so I dont do that much..