You could get hold of a slate seed by entire evaporation of a small number of some transparent spice in naptha or heptane. Ideally use mineral or distilled drinking water. Some faucet water might have a as well large pH diminishing yields/potency. Do not use aluminum pans. Aluminum dissolves in https://3mmckopen59369.theblogfairy.com/31507771/copyright-crystals-an-overview