Short-path distillation is a high-precision technique that takes cannabis extraction to the next level, producing ultra-pure concentrates with pinpoint control. Ideal for isolating THC, CBD, or other cannabinoids, it’s a must-know for serious extractors—here’s the rundown:
What is Short-Path Distillation?
Short-path distillation is a thermal separation process that uses a compact still to vaporize and condense cannabis compounds under vacuum. The “short path” refers to the minimal distance vapor travels, reducing loss and degradation for a pristine distillate.
Why Short-Path Stands Out:
Purity: Achieves 90-99% cannabinoid concentration, stripping away impurities.
Control: Separates individual compounds (e.g., THC from CBD) based on boiling points.
Efficiency: Small-scale setup suits boutique producers or R&D.
Neutral Base: Creates odorless, flavorless distillates perfect for customization.
How Short-Path Distillation Works:
Preparation:
Start with winterized crude oil (waxes removed) from ethanol, CO2, or hydrocarbon extraction.
Setup:
Load oil into a heated flask connected to a condenser under vacuum (0.1-1 mbar).
Distillation:
Heat gradually (200°F-400°F/93°C-204°C) to vaporize cannabinoids; vacuum lowers boiling points.
Vapors travel a short distance, condense, and collect in separate flasks.
Fractions:
Collect “heads” (light terpenes), “main body” (cannabinoids), and “tails” (heavier compounds).
Tips for Short-Path Mastery:
Vacuum Strength: A deep vacuum (below 1 mbar) prevents overheating—invest in a quality pump.
Slow Heat: Ramp up temperature gradually to avoid scorching or co-distilling impurities.
Clean Gear: Residue in the still taints batches—clean thoroughly between runs.
Monitor Flow: Watch condensation rates—too fast means heat’s too high.
Applications:
Vape Cartridges: Crystal-clear distillates for smooth hits.
Edibles: Potent, tasteless bases for precise dosing.
Isolates: Pure THC or CBD for medical or blending purposes.
Conclusion:
Short-path distillation is the extractor’s scalpel, carving out pure cannabinoids with surgical precision. It’s a technique that rewards patience and finesse, delivering concentrates that set the bar for clarity and potency.
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