why evaporate the polar solvent?

[chezzy]

Before coming to the nexus I was evaporating off my solvent at the end of the pull to get the crystals out, now I'm freeze precipitating the out with good effect.

Question - feezing out the naptha was done after about 2/3rds had evaporated. Lots of people say this is a good idea. But why evaporate any? Why not save all of the solvent by freezing for longer, making the procedure more efficient?

Thanks.

 

[endlessness]

It has to do with saturation level. If the solvent isnt saturated enough, only a small amount or none at all of the dmt will crash even if leaving for long in the freezer. Check this explanation and this FAQ question maybe it helps understanding a bit more

by the way, naphtha is not a polar solvent, its NON polar...