I've been doing searches and researching what to do in this situation, but I'm reading different things. I have a fairly large amount of naptha to evaporate. It's probably just over 1 liter, and was derived from a 2lb extraction. I figured this is considered a large amount of naptha for 2lbs but I'm not sure.

I now have half of it in a 10x8 inch dish, covered with a screen to keep dust out, and the other half is in a glass bottle. I'm debating whether to try a freezing method or not. I've read about slow freezing, fast freezing, which is better for certain amounts of naptha, etc. I'm at loss here though. I also read that sometimes you can get goo, and I definitely want to avoid that.

Any input is greatly appreciated! Thanks.

Btw, this is my first extraction!

Just to update, now all of the naptha is in two separate dishes, with a small heater fan blowing down on them. I figure the naptha should be more concentrated before attempting to use a freezing technique.

Ok another update! The naptha has been heating up from the heater. Is this a problem?

No, it is not.

Evaporate it until it starts getting cloudy (~1/5th of the original volume or less). Collect it in a small jar, close it hermetically with food wrap film and let it sit quietly for couple of hours at room temp. Then proceed to freeze-precip as usual.

FAQ: How big should pulls be / How much to pre-evaporate before freezing?

FAQ: Melting/dissapearing crystals during precipitation / Whats the best way to freeze precipitate?

Hope it helps!