i maybe wrong but i know if some solvents are exposed to high humidity (like your breath) will go a lil cloudy as it absorbs that tiny amount of water. Same thing as if you spray paint on a humid day, the paint usually turns a lil cloudy. Or it could simply be more percipitation. Maybe evap it with a fan first down to say, 50ml then wack in the freezer. That i would think would be perhaps more effective then simply making it colder. Combine those 2 thinks together and your prob onto a winner my friend

That would work... if I haven't already done that. I've taken 250ml down to 50ml, Some dmt precips out, but it still clouds when I blow on it. I'm not sure about the "high humidity" thing, but I know that when it's normal naphtha, with nothing in it, it doesn't cloud up when I blow on it...

thats true if you blow on normal naptha it doesnt go cloudy. But if the naptha is ice cold it will definitly condense the small amount of moisture in your breath. The same way if you breath on the side of the glass, wich will be the exact temp as the solvent inside it. You know what i mean?
As i said, i could be wrong but it isnt hard to wack some naptha in a glass; freeze it over night and blow on it to see. I know even solvents that dont mix with water will absorb some tiny insignificant amount of water when it's put in contact with it.
I will try the breathing on cold naptha when i'm finished work i think i'm curious
edit i'd prob try freezing some plain ol naptha and breath on it before i get too worried aboult getting that last lil bit out.

Makes sense, I'll try that later tonight.