Published by the European Cannabis Institute · Educational and professional reference content.
Extraction and purification may introduce or concentrate organic solvents. A robust control strategy begins with process knowledge and ends with a validated release method.
Risk assessment
The solvent list should reflect the actual process, cleaning agents, recovered solvents and credible cross-contamination routes. Generic panels can miss process-specific risks.
Sampling and method suitability
Volatile analytes are sensitive to handling, container closure, sample preparation and headspace conditions. Recovery and specificity must be demonstrated in the real product matrix.
Process controls
Drying time, temperature, vacuum, film thickness and batch load influence solvent removal. In-process understanding reduces reliance on end-product testing alone.
Investigation of failures
An out-of-specification result should trigger examination of process parameters, solvent quality, equipment condition, sampling and analytical preparation before conclusions are drawn.
ECI perspective
Strong cannabis quality systems connect scientific evidence, product knowledge, validated methods and controlled operations. Organisations should document the rationale for their decisions and update it as evidence, processes and regulatory expectations evolve.
References
- ICH Q3C(R8) — Impurities: Guideline for Residual Solvents
- Ph. Eur. 2.4.24 — Identification and Control of Residual Solvents
- EU GMP Annex 15 — Qualification and Validation
Confirm the current effective version and national applicability before operational, regulatory or clinical use.