It needs to be clean, undilute urine. I have never tried to make urine powder but if you do it right it should work. I would be scared I wouldn't do it right and it would take too long to evaporate and would break down before evaporating or if I tried to add some heat iwould add too much heat. Note how much volume it starts at so yo know how much to add back. the advantage of this over freezing it is the ability to store it at room temperature for an extended period of time. Evaporating it isn't going to clean it though.
FakeBoobsRule Reviewed by FakeBoobsRule on . Make your own urine powder? So I found this... 9.2.2.1 Making your own powdered urine: Urinate in a glass container. Let it evaporate. Then scrape the inside for the concentrate. Just mix it with water before the test, and the sample will have the correct specific gravity, pH, color, etc. Does that really work??? FBR??? Rating: 5