Case studies: uses of plasma generated ozone

 Sink drains are the recipients of all the germs washed off our hands and liquid wastes – but the pathogens remain in the inaccessible parts of the drain between the outlet and the u-bend, protected by biofilms. Running water into the drain can aerosolize those pathogens, meaning that they can be transmitted to room occupants, or can settle on surfaces where they can be picked up and spread. Standard chlorine-based disinfectants (bleach, NaDCC) are wholly ineffective against this problem, but ozone can penetrate the biofilm and attack the underlying active pathogens. 

 Glanadair’s ozone technology can deliver precise doses of ozone into the drain, on demand, and using only the ambient air, via a small portable battery-powered device that fits snugly into the sink during cleaning. Find out more from our publication   

Pajak-Zajac, Dowdell, Potts, Smith & Diver: 2025 Journal of Hospital Infection, Volume 159, 100 - 105

  Our patented electrode system can convert a fraction of the air inside an airtight sealed package to ozone, without compromising that seal. The ozone circulates in the pack, and if it contains food such as berries, then the spoilage organisms on the food surfaces are attacked by the ozone, making the food last longer in the pack (a bonus for customers), and reducing the food waste for retailers.   

Our machines can be installed on food factory lines, meeting processing speeds that exceed 100 packs per minute. Trials of our system with a major food retailer (>600,000 packs) demonstrated a shelf-life extension of 2 days on packaged strawberries, and an 80% reduction in food waste. 

   Endoscopes are very challenging instruments to clean and disinfect: up to 2m long, with internal tubes (lumens) that are only mm wide, these heat-sensitive flexible and very expensive instruments are very difficult to clean and disinfect with conventional liquid detergents: as a result they are currently associated with the highest risk of cross-infection. However, they are ideal for a gaseous biocide like ozone: an endoscope inside a sealed bag can be disinfected from the outside, without breaking the seal, using our patented electrode system. Using only the air trapped inside the sealed package, our system can convert a small fraction of it into ozone, which can then be encouraged to permeate all aspects of the device (including the lumens) without damaging expensive optics or electronics. As a bonus, the sealed bag can act as an aseptic container until the endoscope is next used. Verified by Andersen Caledonia (an accredited microbiology testing laboratory), we present results below showing the efficacy of this approach