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What is Counterfog®

Counterfog® is a unique and patented technology for large-scale, rapid, and effective decontamination of air and surfaces in buildings, vehicles, infrastructures, etc. It  decontaminates all types of biological, chemical, and radiological agents, as well as smoke, pollution, and dust. It is particularly useful against volatile agents, air pollutants and aerosols.


How does it work?

Counterfog® patented nozzles generate  dynamic swirling fog cones made of trillions of sub-micron liquid droplets. Their particular dynamics forces collisions with air-borne particulate matter and solve gases and vapours. Eventually, these droplets grow and collapse trapping  and removing all known types of pollutants.


Why does Counterfog® actually work?

Due to two basic principles. First, the  swirling mist ejected by the Counterfog® nozzle exerts a suction force on the surrounding air so that contaminants are attracted towards the center of the mist cone. Second, droplets progresively aggregate with the air-borne particulate matter and collapse.  Therefore volatile agents can be disinfected even if the mist is not directly projected upon it.

Why is Counterfog® different?

Counterfog® differs completely from other disinfection systems.

Indeed, conventional spraying systems use water droplets, but these are too large to collide with the particulate matter or aerosols. They just push way the air with all the air-borne contaminants away.

In other words, other systems disperse volatile contaminants instead of disinfecting them.

On the contrary, thanks to the swirling submicrometric mist, very short applications of Counterfog® are enough to disinfect 99.99% of pathogens in all types of indoor or outdoor environments. It is the perfect weapon to fight against aerosols.


How and why was Counterfog® invented?

Counterfog® technology was created under contract number 312804 of the European Commission’s 7th Research and Development Program between 2013 and 2018. The EC, concerned by the growing terrorist threats based on biological weapons (i.e. anthrax) urged European researchers to propose and develop new technologies that should be effective, fast, and easily adaptable to multiple situations where a toxic cloud may be released -irrespectively of its origin and characteristics.

The Counterfog® team, made up of scientists from 10 European institutions and universities, won this contract and succeeded in developing a unique technology counteracting any kind of toxic cloud.


Where can Counterfog® be used?

Anywhere, both indoors and outdoors.  

It can be applied to disinfect any material selecting the adequate non flammable liquid biocide: furniture, computer or electronic equipment, office supplies, books, papers…

The suction effect is enough to remove any volatile agent that may be present and it is not necesary to directly apply it on artworks or delicated objects to ensure a safe sanitization and extraction of any resuspendable aerosol or virus. 

Even when directly applied at a normal speed, the generated submicron water droplets are so tiny that the total amount of liquid used is extremely small,  leaving virtually no residue and causing no moisture damage.  Please consult our experts which biocides and procedures are the best for your case. 

Who markets this technology?

Counterfog® technology is exclusively manufactured and marketed by Counterfog EBT de la UAH SL. (Spain, EU), and its U.S. division, Counterfog Corp.   Please consult us for distributors in other regions.


What special precautions should I take when using Counterfog®?

Counterfog® technology gets the best from any liquid non-flammable biocide making them more effective and efficient. Therefore, protections and precautions associated to the biocide should be taken, like masks, gloves, protection clothes, eye protections etc.  Please refer to the user manuals and to the safety documents of the biocide. 


What can be used with Counterfog®?

A basic decontamination of air can be done using just potable water (usually with a minimum amount of solved chlorine). This simple and environment friendly application of Counterfog® will remove efficently particulate matter and hydrophilic aerosols from air.

If you want additionally to quickly disinfect any biological agent you may use a non-flammable liquid biocide tested against the particular microorganism you wish to kill and compatible with the materials of the environment. We recommend using only liquid products authorized for the corresponding country (please consult manuals). Please, avoid flammable biocides.

Rest time after application recommended by the biocide manufacturer must be respected.

How do I learn how to use Counterfog®?

Counterfog® is extremely easy to use and does not require any professional qualifications.

If you purchase our portable products you will receive the necessary manuals and datasheets, where instructions will be clearly indicated.  Manuals and data sheets are available in our webpage as well. In addition, numerous tutorials are available on our Youtube channel.


How can I buy Counterfog® products?

Either through our online store or by contacting us.

In the latter case, either from our headquarters in Madrid Spain or from our headquarters in Irvin, Texas.


Which Counterfog® product is right for me?

Generally speaking, Counterfog® portable equipments are ideal if you have to disinfect several rooms or outdoor spaces because it can reach any difficult place or corner. It is an economical and highly effective solution.

Disinfection barriers are perfect for preventing contaminants from traveling through the air, entering a building or space to be protected or to quickly decontaminate people.

Large-scale solutions are tailor-made to meet specific challenges: large spaces, or installation in vehicles, for example.

The stations are perfect for installation in chek in places where vehicles, freight or people to be decontaminated are received.  

Will I get technical support?

Counterfog® provides technical support on the contact phone number and email below , as wel as replacement parts and technical service on demand.



USA Address

Counterfog Corp
4755 Byron Circle
Irving, TX 75038-7503
+1 972-955-0168

Counterfog logo

EU Address

Counterfog EBT de la UAH, SL
Av. de Europa, 82
28341 Valdemoro (Madrid) Spain
+34 910 13 58 97


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