cheesenuget

no, this is the only thing i have acces to at the moment, so i need some way to extract

i got some realy cheap fertilizer today and i want to extract the potassium nitrate from it. the numbers are 15-15-30. 15% nitrogen, 15%Phosphoric Acid, 30%Soluable Potash and a little others. It is a soluable fertilizer. I herd that there are a few different ways to extract it, i was wondering how i could do it without spending a week of time for 500g of potassium nitrate. Does freezing it in water work? (a rumour) thanks.