Closed-Loop Extraction
What does "Closed-Loop Extraction" mean?
An industrial method of creating cannabis concentrates. In general, extraction solvents are used to pull material from flower; in closed-loop extraction, these solvents are kept internal to a system and never exposed to air, allowing for reuse of solvents and better safety for manufacturers.
Example usage:
I exclusively buy concentrates made using closed-loop extraction since it's a safer process.