What Is Aerosol Extraction?

R134a (1,1,1,2-Tetrafluoroethane) is classified by the FDA as Generally Recognized As Safe (GRAS) for use in food and pharmaceutical applications. It has been used as a propellant in metered-dose inhalers for decades. The European Union has also approved it as an extraction solvent under EC Directive 2009/32. In the PURE5™ system, R134a evaporates completely at room temperature, and third-party lab testing consistently confirms zero detectable residual solvent in the finished extract – a compliance advantage that ethanol and hydrocarbon processors struggle to match.

Commercial supercritical CO2 systems typically range from $200,000 to over $450,000, plus $50,000-$150,000 for C1D2 room buildout, extensive operator training, and high energy costs from maintaining pressures above 1,071 psi. The PURE5™ R134a system operates at a fraction of that pressure (~100 psi), requires no specialized room classification, minimal training (hours, not weeks), and eliminates the need for post-processing equipment like winterization and distillation rigs – which can add another $100,000+ to a CO2 or ethanol operation's total investment. When you factor in total cost of ownership, PURE5™ delivers a significantly faster path to ROI.

Yes. The PURE5™ PBX™ process works identically on both cannabis and hemp biomass. Because R134a is a non-polar solvent operating at ambient temperature, it selectively extracts cannabinoids, terpenes, and flavonoids from any Cannabis sativa variety regardless of THC or CBD dominance. This versatility gives PURE5™ operators a strategic edge – a single system can serve both markets without retooling, recalibration, or additional equipment purchases.

Far less than any competing method. Because R134a is non-flammable and non-explosive, PURE5™ systems require no C1D1 classified rooms ($150-$300/sq ft to build), no blast-proof electrical systems, no continuous gas monitoring, and no specialized fire suppression. The system runs on standard electrical service and can operate in any clean, well-ventilated commercial space. For operators leasing space or expanding into new markets, this translates to dramatically lower buildout costs and faster time to production compared to hydrocarbon or CO2 setups.

Terpenes define each strain's unique aroma, flavor, and therapeutic character – and they are increasingly recognized as pharmacologically active. A 2024 peer-reviewed clinical study from Johns Hopkins University found that D-limonene significantly reduced THC-induced anxiety when co-administered with THC, providing some of the first clinical evidence for the cannabis entourage effect. Most extraction methods destroy these volatile compounds through heat or pressure. PURE5™ aerosol extraction is specifically engineered to preserve the complete terpene profile at ambient temperature, delivering Mega Spectrum™ oil with terpene retention that independent labs have confirmed is statistically indistinguishable from the starting biomass.

Full-spectrum is an industry term for extracts that retain a range of cannabinoids beyond just THC or CBD. In practice, however, most “full-spectrum” products still lose substantial terpene and flavonoid content during processing due to heat exposure, high pressure, or post-processing steps like winterization and distillation. PURE5™ introduced the term Mega Spectrum™ to describe a fundamentally different result: an extract where all three compound families – cannabinoids, terpenes, and flavonoids – are preserved at their natural ratios as they exist in the living plant. No other commercially available extraction method achieves this level of fidelity at production scale.

Most operators reach full proficiency within a few hours. The system requires only two input parameters – process time and temperature – and the automated PLC interface manages pressure, flow rate, solvent recovery, and cycle timing automatically. Compare this to CO2 systems that require weeks of specialized training to manage supercritical parameters, or hydrocarbon systems that demand extensive safety certification and C1D1 protocol knowledge. PURE5™ was designed so that any competent team member can produce consistent, high-quality output from day one.

The PURE5™ system is optimized for dried and cured cannabis biomass. While hydrocarbon live resin processes require fresh-frozen input, blast freezers, and cryogenic solvent temperatures – adding significant infrastructure cost and complexity – PURE5™ achieves comparable or superior terpene preservation from properly cured flower at room temperature. The result is Mega Spectrum™ oil with the full aromatic and therapeutic profile that live resin promises, but with pharmaceutical-grade purity and none of the safety risks or facility overhead.

This is one of PURE5™'s strongest advantages for MSOs. Every extraction parameter is controlled, logged, and reproducible through the PLC interface, meaning a batch produced in Arizona will match a batch produced in Colorado or Michigan. The simplified facility requirements (no C1D1 rooms, no cryogenic systems) reduce buildout time and cost at each new location, and the minimal training curve means new staff can be production-ready within days. For operators standardizing quality across multiple facilities, PURE5™ removes the variables that make consistency so difficult with other methods.

PURE5™ extraction systems are designed to align with cGMP (Current Good Manufacturing Practices), ISO quality management standards, and FDA guidelines. The R134a solvent itself carries FDA GRAS status and EU approval under EC Directive 2009/32. Because the system produces zero residual solvent in the finished extract, it removes one of the most common compliance hurdles that ethanol and hydrocarbon processors face during state testing and regulatory audits. For pharmaceutical cannabis manufacturers or any operation where regulatory scrutiny is high, PURE5™ provides a built-in compliance advantage from the start.