If your extract still carries residual solvent at the end of the process, the problem usually did not start in the vacuum oven. It started upstream with film thickness, solvent load, heat input, vacuum depth, or the operator trying to force mass transfer with temperature instead of time and surface area. Residual solvent purging in [...]
How to Purge Residual Solvents from Cannabis Concentrates: Solvent-Specific SOPs, State Limits, and Diagnostic Protocol Residual solvent purging for cannabis concentrates requires solvent-specific parameters: butane purges at 29-38C (85-100F) under 29+ inHg vacuum for 24-72 hours to reach sub-500 ppm. Ethanol purges at 40-50C (104-122F) under 28+ inHg for 8-24 hours. Propane purges faster than [...]
Nearly half of all licensed cannabis products on dispensary shelves carry THC labels that are wrong by more than 20%. A 2026 study found that 48% of licensed cannabis products deviated by more than 20% from their labeled THC concentration. A peer-reviewed PLOS One study of Colorado dispensary samples found average observed THC potency was [...]
Learn how to design a cannabis extraction lab the right way: layout, utilities, safety systems, workflow, and bottlenecks that actually matter.
What is a closed-loop extraction system, and why does it matter? If you want the downstream finishing side in more detail, read Residual Solvent Purging in Cannabis. It explains why slab geometry, vacuum depth, and solvent load decide whether your post-extraction workflow passes cleanly or keeps failing COAs. A closed-loop extraction system is a solvent-based [...]
Safety equipment extraction lab compliance starts here. For how federal reclassification affects lab compliance requirements, see our Schedule III analysis. What does a cannabis extraction lab actually need? A compliant facility requires, at minimum: a classified electrical system (C1D1 or C1D2), continuous LEL gas detection with an alarm set at no greater than 25 percent [...]
What Is Remediation in Cannabis Processing? When a cannabis batch fails testing, should you remediate it or destroy it? This is one of the most expensive decisions an extraction operator faces, and most people make it based on gut feeling rather than chemistry. Remediation is the process of bringing a non-compliant cannabis product back into [...]
If you've ever wondered why that bag of flower hits harder than anything you've ever smoked — but leaves you feeling off — you might be smoking sprayed cannabis. The sprayed flower epidemic is one of the cannabis industry's dirty secrets, and it's more widespread than most consumers realize. In this breakdown based on WKU [...]
If you’re running a cannabis or hemp extraction laboratory, lab safety isn’t optional — it’s the difference between a successful operation and a catastrophic failure. In this guide based on WKU Consulting’s lab safety breakdown, we cover the critical safety protocols every extraction lab needs to implement from day one. SOPs Are Your First Line [...]
Standard Operating Procedure (SOP) for Safe Storage and Handling of Industrial Scale Ethanol Purpose: This SOP outlines the guidelines for the safe storage and handling of industrial scale ethanol in order to prevent accidents and injuries. Scope: This SOP applies to all employees who handle or work with industrial scale ethanol in the facility. Definitions: [...]
