Hi sorry if this has already been answered but can't find it anywhere. When it comes to evaporation, could a slow cooker on "keep warm" setting be used to help speed things up a bit? For anyone unfamiliar with a slow cooker, crockpot seems to be the most well known brand. Thanks guys

Hmm, i was actually about to try the same thing, I have a lot of very yellow spent naphtha, I have a small rice cooker, Could hold maybe 300mls of naphtha, with a keep warm setting, I don't know the actual temperature, I might just fill it up with water, put it on that setting, and test the temperature with a thermometer.

Either way, it seems like a great, risk free way to evaporate naphtha, Should be done on a outside or with plenty of ventilation though, and kept a close eye on.

SWIM purchased a desktop coffee maker (the kind for your office cube) for perhaps $15. Tossed the peculator and actual glass and have has been using it to warm naptha, base solutions, and sometimes actually coffee. Small, cheap and has not let me down yet.

Sounds potentially dangerous to me, possible electric sparks + warm flammable solvent doesnt sound like a good idea.

What about a wide dish + fan to accelerate speed?

Skeet I have no idea what this desktop coffee maker is but what material is the naphtha in touch with?

@endlessness- I didnt think there would be any danger of sparks tbh, as all it is is a metal element underneath a ceramic dish. Unless u mean from the plug?

As it stands this is hypothetical anyway, i just want to research and plan every last detail thoroughly before i start an extraction. Thanks for the input ppl

why not use a double boiler on an induction plate?

There is probably not much chance of sparks with a slow cooker, but do you know what temperature it gets to? In general I would say you don't want to warm up the spice very much. Of course it doesn't change its aggregate state until a higher temperature but statistically you are losing more molecules the warmer your spice gets because some will always fly off.

Also naphtha evaporates SO FAST, I don't understand why you would need machinery for it at all, other than maybe a computer fan. Or what is it you are trying to evaporate?

The way I do it is by putting the naptha I want to evaporate in a pyrex pie plate/bowl-thing. I throw some water in a cooking pot for the stove, put the stove (electric) burner on, set the pot o' water on top of the burner, then put the pyrex dish of naptha on top of the cooking pot in a way so that the bottom of the dish is touching the heated water. I am aware that heat and flammable solvents are potentially dangerous and that it being on a stove doesnt help, but I dont let the water go over 120 degrees farenheit and the naptha is deep enough in the dish and pot that the chance of sparks jumping into it is pretty darn low. I also put a fan so that the air from it is kind of vibrating the naptha. A large amount of naptha evaporates very quickly when you do it like this, so keep checking on it to make sure you didnt over evap. I evaporate all of my naptha used for ~5-6 pulls (that have already been FP'd) in about 3-4 hours.