// Definition
A butane hash oil (BHO) extraction method using a sealed, closed-loop system where butane solvent is recovered and recycled rather than vented to atmosphere. This is the professional-grade standard for hydrocarbon extraction, offering safety advantages over open blasting.
// From the Episode
A guest on ep100 described running closed-loop butane extractions in their licensed Washington 502 lab. The extraction process involved wrapping material, running butane through it, and recovering the solvent. Discussion emphasized that the heat generated by the extraction and compression process itself aided in purging. The extraction was described as leaving nothing behind.
// Source
Ep. 100 Hash Church XCVIII 98 →