ISO alcohol has polarity of around 3. butane haxane pentane all around 0-1. ethanol has a polarity around 5 and water is completely polar at 10 so it can be said that with a mixture of iso and water a polarity similar to ethanol can be ahcieved like 70 percent iso. in canada we dont have access...
what i know forsure is that the terpenes are first romoved then reintroduced after decarbing as for the extraction method im going to assume vacuum distillation/sublimation its the only solventless proccess that can allow you to evaporate the resin right from the bud at low temps and you can...