Portable, High Powered, Industrial Ozone Generators - specifically designed for Food Factories



NO liquid, NO residue and NO manual labour required!
Simply turn on and walk away. Once full cycle has been completed, it is safe to re-enter the room.
2 month trial rentals available!
Allowing you to undertake your own swab testing and prove how effective Ozone is.



Ozone gas is the most powerful oxidising agent permitted for use at this time in the UK. As an oxidising agent it is 51% stronger than chlorine and has a kill rate of 3.125 times faster. These Ozone generators produce a very high concentration of Ozone gas to fill an enclosed area in a short amount of time and disinfect all areas of the room and any equipment in it. Ozone has been extensively proven to combat bacteria, viruses, fungi, spores and biofilms, making it an extremely effective disinfectant for any food factory. Although it’s classified as a Biocide, it’s completely natural, environmentally friendly and leaves no chemical residue (unlike most Biocides), meaning it’s suitable for all food production and processing facilities, including organic sites. 

These portable Ozone generators are the most powerful on the market and are only available from Purehold. They can disinfect small areas (like Chiller rooms) within 1 hour, or large production areas (up to 2,000 m³) within 8 hours! Whatever the size of your area and pathogen, Ozone can help!  

*** COVID-19 UPDATE***

Ozone has been scientifically proven to effectively destroy Coronavirus (COVID-19). Japanese researchers have found that low concentrations of ozone can neutralise coronavirus particles, potentially providing a way for hospitals to disinfect examination rooms and waiting areas. Scientists at Fujita Health University told a news conference they had proven that ozone gas in concentrations of 0.05 to 0.1 parts per million (ppm), levels considered harmless to humans, could kill the virus. Ozone, a type of oxygen molecule, is known to inactivate many pathogens, and previously experiments have shown that high concentrations, between 1-6 ppm, were effective against the coronavirus but potentially toxic to humans.

(Source - https://www.reuters.com/article/us-health-coronavirus-ozone/japan-researchers-say-ozone-effective-in-neutralising-coronavirus-idUSKBN25M0SO)

Our high Powered, Industrial Ozone Generators are easily able to achieve Ozone concentration levels of over 4ppm, ensuring that Coronavirus (COVID-19) and other pathogens are destroyed.

Technical Facts

As an oxidising agent, Ozonated Gas is 51% stronger than chlorine and has a kill rate of 3.125 times faster. Ozone owes its biocidal effectiveness to its ability to oxidise organic material in bacterial membranes, which weakens the cell wall and leads to cell rupture causing immediate death of the cell.

In contrast, chlorine, and all other oxidising and non-oxidising biocides, must be transported across the cell membrane in order to interfere with either the nuclear reproductive mechanism or various enzymatic life giving reactions in the cell, in either event resulting in substantially less biocidal efficiency.

For this reason, ozone is capable of destroying all bacteria, algae and biofilms with no risk of resistance build up or immunity. 

Benefits of using Ozone over traditional surface disinfectants

  Ozone is the most powerful oxidising agent permitted for use at this time. As an oxidising agent it is 51% stronger than chlorine and has a kill rate of 3.125 times faster.
  Effectiveness - Proven to combat bacteria, viruses, fungi, spores and biofilms.
  No employees are required as this is an automated disinfection system.  This saves money long term from not having to employee staff to physically sanitise the rooms/equipment each night.
  Complete coverage - being a gas, Ozone is guaranteed to get into hard to reach areas which may be missed during cleaning cycles. This includes any Evap units in the Chiller that are notoriously difficult to clean and often get neglected.
  Saves space and money - there is no need to buy and store large amounts of chemical disinfectants/sanitisers.
  Does not generate resistant bacteria like some traditional chemicals can, making it ideal for long term use.
  Leaves no residue - Ozone degrades back to oxygen 
  Health & Safety - Ozone technology has come a long way in the last 10 years and is now safer than ever to use.
  Campden BRI - a recent Listeria conference held by Campden BRI listed Ozone treatment as a solution for site decontamination in the fight against Listeria.
  Widely proven in the field - Ozone is widely used by European and American food factories to help disinfect storage rooms and production facilities. Major UK food manufactures are now embracing the technology to help combat persistent pathogens such as Listeria, E.Coli, Salmonella and Campylobacter.
  Extends shelf life of food products - as well as being a surface disinfectant, Ozone can also be used to extend the shelf life of produce because Ozone stops the production of ethylene given off by fruit and salads, thus they stay fresh longer.   


Ozonated gas is typically used to

  • Disinfect rooms and equipment where fogging or traditional chemical sanitisers are not achieving acceptable results 
  • Disinfecting areas where food products are stored and cannot be removed easily (Ozone is completely food safe and leaves no residue)
  • Disinfect Chiller Evaporation Units / Air ventilation systems that are nearly impossible to clean regularly and which often circulate bacteria throughout the room.

UK Food Factory Testimonials

Here are just a few testimonials from many UK factories that have successfully tested the technology:

  1. “The testing has gone well and in most instances removed Listeria after use” 
    Hygiene Manager, Major Snack Food Manufacturer
  2. “Great results from the line running Ozone. This will support my Listeria project meeting with the MD today”
    Quality Assurance Compliance Lead, Major Cheese Manufacturer
  3. In the ingredient chiller we have had clear results from that chiller for the last few weeks since running the machine every week in that area”
    QA Manager, Major Convenience Food Manufacturer
  4. “Following your training, our H&S manager is now happy with us to use Ozone on site”
    Hygiene Manager, Major Produce Supplier

Technical FAQ's

What are the risks associated with ozone disinfection/cleaning?
The risks associated with Ozone are no greater than using a traditional fogging system and if used correctly there are no H&S issues. On delivery of the unit, we train you and your team on how to operate the unit safely and this is at the forefront of all of the training. The actual operation of the unit is very straight forward.

How will entry to the area be prohibited whilst this is in operation?
It all depends on the individual site and what options we have available to us. Typically we would recommend the following: 

  • attaching Ozone WARNING signs to the door
  • putting a chain or tie wrap around the door handle to prevent access
  • inform all staff working in the facility that Ozone disinfection will be in progress

How will it be verified that the area is safe to enter BEFORE allowing re-entry?
The units have an Ozone sensor on them and the destruct cycle will continue to run until the Ozone is down to a safe level. The Operator will be able to see this on the mobile App and also the red flashing light on top of the unit. As an additional precaution we recommend opening the door for 15 minutes and turning on any air extraction system. This just helps remove any “pockets” of Ozone that might be left in the room.

How will it be verified that the equipment is delivering ozone at the appropriate concentration level (calibration and routine monitoring)
We recommend the units are serviced every 12 to 18 months and this comes as part of the Lease Purchase package (or can be purchased separately if you buy the unit outright). We can also supply a separate sensor with visual display if you want to monitor the actual Ozone level achieved every time you run Ozone. This latter option would have an additional cost associated with it.

Any special first aid training required to deal with exposure to ozone?
You should never need this BUT in the case someone did enter the area, the MSDS and COSHH recommendation is to remove and take the person outside, loosen cloths and wash eyes (see copy of COSHH attached).

Which Ozone unit is right for my site?

In order to work out which size Ozone generator you require for your site, we need to know a few important pieces of information from you, such as room sizes and the amount of time available to run Ozone. Please contact us and one of our experts will run you through the information we require. 

Want to trial?

We know most companies can’t introduce a new chemical such as Ozonated Gas without trialling it first. As such we offer all food factories a chance to trial the technology. Please contact us and one of our experts will run you through the information we require to arrange a trial at your site.


Available to either purchase outright, or prefer to try before you commit? 2 month trial rentals available!


Ozonated Water

Interested in using Ozonated Water instead of Ozonated Gas? See our Ozonated Water page for more information. CLICK HERE

Additional Information & Questions

We are here to help so if you have any questions please contact us. There’s no hard sale or pressure – we simply want to answer any questions you have! You can then go back to your team and present the information and see if Ozone is something your site wants to trial.




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