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Decontaminate. Sterilize. Clean.

Cannabis Microbial Remediation

Cold Plasma Group has developed a patent-pending cannabis sterilization technology using cold plasma treatments. We offer “smart” plasma machines equipped with remediation cycles which are effective, yet gentle towards the quality of the products.

Cold plasma sterilization mechanisms

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Plasma, the 4th state of matter, can be described as a luminous cloud formed as result of an electrical discharge initiated in a gas. Electrons, ions, free radicals and light particles are formed as a result, all with excess energy.

The interactions of oxygen and nitrogen containing radicals responsible for killing microbes through:


the disruption, piercing, or the etching the membranes or shells of microorganisms, and the


the denaturation of proteins, the damage to lipids or DNA, leading to impaired cell function.

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Albeit a less important player, UV radiation is also present in the plasma cloud, which contribute to the break-down of the membranes, shells and of other components, as a DNA strands. 

Benefits of Cold Plasma Sterilization 

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Plasma machines are compact, easy-to-use, and scalable.

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Plasma treatments are safe, organic and free of chemicals, heat or ionizing radiation.

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6log (99.9999%) to 4log (99.99%) reductions can be achieved using plasma treatments for many microbial species, including yeast and mold spores.

Treatments with our plasma cycles are effective, yet gentle towards the quality of the product. Flowers appearance, nose, trichomes, cannabinoids, and colour remain unaffected.

Smart Plasma Sterilizers


All our machines are EU-GMP and GPP suitable.


They are automated and self-cleaning with one or two door options. 


Computerized systems of our machines offer integrated touch-panel for operator control, along with:

  • library of processes for safe and consistent processing, and 

  • real-time monitoring.


CPG personnel offers technical support and services for a complete turn-key and custom solution.

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Total concentration of terpenes measured using GC analysis:

Research data

Microbial scans:


Total aerobic bacteria, bile-tolerant gram-negative and total yeast and mold tests were performed on naturally contaminated medical products according to USP62, MFHPB-33 and MFHPB-32 methodologies.


THC and CBD molecules were quantified using high-performance liquid chromatography. Terpenes were quantified using gas chromatography.


Yeast and mould species were found to be the most resilient contaminants but were still destroyed with 99.99% efficiency.


Cannabinoid and terpene profiles were preserved by the plasma sterilization process.

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