The Complete Guide to Vacuum Oven Purging for Cannabis Concentrates
Vacuum oven purging removes residual butane, propane, or ethanol from cannabis concentrates by holding material at 100 to 115°F (38 to 46°C) under full vacuum at -29.5 inHg for 24 to 72 hours. BHO concentrates spread to 1 to 2 mm film thickness at 100°F reach compliant residual solvent levels (below 5,000 ppm total hydrocarbons [...]
