It’s solventless. Many kinds of economic concentrates obtainable at dispensaries are extracted with solvents like butane or propane. When initiatives are made to purge residual solvents from hydrocarbon extracts, there continues to be the chance of some making it into your hash, detectable over a pieces per million (PPM) scale. https://finndkquc.thekatyblog.com/32589694/top-guidelines-of-cbd-rich-flower