Residual solvents
Traces of the solvents used in extraction, such as butane, propane or ethanol, left in a concentrate. Each has a state limit in parts per million.
Related terms
- Resin
Concentrate pulled out with a solvent. Live resin is made from fresh-frozen plant. - Rosin
Concentrate pressed out with heat and pressure. No solvent. - Pass / fail
Each safety test on a sheet ends in a pass or a fail against the state's limit. A batch that fails a required test cannot be sold as it is.