The necessity of living in clean environment

Our media attention is focused on air pollution, but since we live on average 85% of our time indoors, the importance of living and working in healthy environments is evident.

Normal cleaning is no longer enough

The health emergency has forced individuals to adopt habits and tools for everyday prevention and companies to comply with new provisions, regulated by the law, to protect health in the workplace.

How long does coronavirus live on surfaces?

Glass: 2 days
Plastic: 4 days
Banknotes: weeks

Even when the pandemic will be behind us, the good habits and arrangements to ensure health in the social and work place will stay.

Cleaning, disinfecting, sanitising

From both a scientific and a regulatory point of view, these three words are not synonyms, they are three progressive levels of intervention: as defined by the Italian Ministerial Decree 275/1997.


It consists of thorough cleaning with substances capable of removing or reducing pathogens on objects and surfaces. Cleaning substances (such as bleach) are active against pathogens but are not considered surgical medical devices.


Through chemical, physical or mechanical products it reduces the presence of pathogens, destroying or inactivating them in a relevant but not absolute share.


Intervention necessary to make an environment healthy, which includes the cleaning, sanitation and disinfection phases and improvement of the environmental conditions at both surface and microclimate level.

What did the healthcare emergency teach us?

SARS-CoV-2 has brought the awareness that sanitising and disinfecting with traditional methods is no longer enough. That’s why the best healthcare, hospitality, transportation and other organizations rely on safer technologies.

Chemical or ozone sanitation is not as effective and it comes at a cost for men and the environment.

The frequent use of chemical disinfectants, in addition to being harmful to the environment, can have negative effects on human and animal health. Furthermore, viruses tend to develop resistance over time.

UV-C rays technology prevents the spread of any pathogen

Sanitation using UV-C rays at a wavelength of 254nm has proven to be the most effective, as it acts on the genetic mechanism of replication. For this reason, it will always be effective and indispensable, even when the Coronavirus health emergency will be over.

Environmental disinfection and sanitation technologies

In order to disinfect air and surfaces, the solutions on the market today offer various technologies that can be complementary for a complete and constant sanitation of the environments, as each tool has intrinsic limits to its action, or disadvantages. Just think of ozone-based products: certainly harmful to micro-organisms, but also to humans.

Chemicals are effective for disinfection but some microorganisms develop chemical resistance over time. Furthermore, not all materials can be disinfected with chemicals (in the food industry, for example). With the health emergency, unfortunately, both domestic and industrial solutions have appeared on the market, which are absolutely ineffective if not harmful to health.

If you're familiar with this sector, go find out about CovKill advantages


Ineffective in removing larger particles, most of them settle on surfaces and do not even reach the filters; these particles become a source of pollution.

Ion release/electrical/plasma

They use +/- charges to remove particles and disintegrate volatile organic compounds. However, oxidation is slow and incomplete. It generates high levels of ozone.

Photocatalic oxidation

Its use is limited to situations with low concentrations of volatile organic compounds, as decomposition occurs only on the surface of the catalyst.

Chemical products applied regularly

Liquid / mechanical cleaning through soaps, bleaches, peroxides, etc… It disinfects accessible surfaces and materials with non-homogeneous levels of cleaning. It encourages the re-growth of bacteria or viruses resistant to antibiotics and leaves chemical residues (presence of toxic / irritating substances).

Aerosol, foggers, gas dispersal of chemicals

It distributes oxidizing chemicals (such as ozone, perchlorates and peroxides) in the air and on the surfaces.  There can be no people when the product is used.

UV-C rays without shielding

It disinfects unoccupied spaces, but areas in the shadow need to be reprocessed separately.

UV-C rays are the most effective solution to neutralise viruses and bacteria

The use of UV-C rays today is the solution with the best ratio between effectiveness in sanitation, costs of use / maintenance, and safeguarding human health. UV-C rays are a proven technology, used for over 40 years to disinfect drinking water, waste water, air, pharmaceutical products and surfaces.

Sunburn, from which we must protect ourselves during summer, occurs because ultraviolet light damages DNA: according to this same principle, UV light kills any micro-organism, intervening on the DNA sequence and interrupting the replication mechanism of viruses and bacteria.

The wavelength between 200nm and 280nm has a certain energy and therefore an efficacy in this sense. UV-C rays are normally blocked in the ozonosphere and do not reach the earth’s soil: no living organism, including people, has protection from it.

And this is why UV-C based instruments must be professional devices designed to be safe and to be used with criteria for all cases where the highest level of disinfection is required.

Why rely on a technology based on rays that are harmful to humans? 

Thanks to its ability to break the molecular bonds of DNA and RNA, UV-C light radiation is able to make all bacteria and viruses inactive in a very short time. In the case of CovKill, to prevent damage from exposure, it is necessary that people are not present in the room at the time of irradiation. However, our device warns the operator before starting the sanitation process in the event that it detects the presence of people in the area subject to irradiation.

Effective at 99.9% even against Coronavirus

UV-C radiation is able to neutralize Coronavirus: the ability to break the molecular bonds of DNA and RNA of bacteria and microorganisms has been shown to apply to SARS-CoV-2 too.

The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) recommends ultraviolet germicidal irradiation as a strategy for addressing transmission of COVID-19 disease (ASHRAE 2020).

What are the benefits of the CovKill technology? 

Living and working in a comfortable environment corresponds to a higher quality of life. For example, a sanitised company environment involves not only an increase in productivity, but also a decrease in staff sick days.

  • Elimination of bacteria, viruses, molds, fungi
  • Elimination of chemical pollutants
  • Reduction of nosocomial infections
  • Influenza pandemics reduction
  • Savings on the purchase of chemical agents
  • Elimination of allergens
  • Reduction of fine particles
  • Elimination of bad smells
  • Reduction of sick days in the workplace
  • Improvement of working productivity
  • Savings on maintenance costs
  • Increased life of HEPA filters
  • Energy saving
  • Compliance with rules and regulations

Discover Virus Killer

VK 10 and VK20 are the first two machines designed and manufactured by J&S equipped with CovKill technology. 100% Made in Italy.

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Why is CovKill different from the other technologies?

The effectiveness of UV-C lamps depends on the duration of exposure, the intensity, and the wavelength of UV radiation. How many products on the market measure these three factors? Generally, the devices are based on theoretical values: they're valid if we always treated identical environments or in ideal conditions.

Thanks to its sensors and its wireless console, CovKill is the only device that calculates the time and power needed to eliminate a certain type of virus, measuring and monitoring these parameters before and during the action, according to the conditions and the size of the environment to be sanitised.

CovKill: effective, safe, ecological UV-C sanitation technology


The action of UV-C rays eliminates all types of microorganisms without creating resistance and without being harmful to people if used in a conscious way. CovKill is ideal not only for all environments where the highest level of sanitation must be achieved, but also for those sectors, such as the food industry, where there is a risk of ingestion or contact with chemical products.


For decades, UV-C rays have been recognised worldwide for sanitation, because they deactivate all types of bacteria, viruses, spores, fungi and molds. Microorganisms such as Bacillus, Coli, Clostridium, Legionella, Vibrio, Salmonella, Pseudomonas, Staphylococcus, and Coronavirus. Furthermore, microbes cannot develop resistance to UV-C rays, as it happens with the use of chemical disinfectants.


Based on the characteristics and dimensions of the environment to be sanitised, the system calculates the time required for the process, which lasts from a few seconds to a few minutes. Even in the case of an industrial warehouse, it is sufficient to move the device to the areas to be covered. Compared to gaseous or chemical agents, it is not necessary to ventilate the room for minutes (or hours), but the staff can be immediately operational.


The technology requires only the replacement of lamps and eliminates, or reduces to a minimum, the use of chemical disinfectants, with immediate and lasting savings. The degree of sanitation is maximum in the single process, and constant over time, where chemical disinfectants perform their action with maximum effectiveness only at the time of their use.


UV-C rays are a physical and ecological process: saving on chemicals and on the use or maintenance of additional devices translates into savings for the environment. The sanitation process does not release chemical agents and requires limited energy consumption. The lamps are long lasting (1200 hours).


The current Virus Killer machines, in Tower and Mini-Tower versions, will be joined by new models, designed and studied for specific application areas. Since for 30 years the heart of J&S business has been the R&D of products with high innovative value, it is possible to study variations and customisations together at the customer's request.

Revolutionise the sanitation method in your company

Virus Killer sanitation makes you save money and improves the level of healthiness of your indoor spaces.

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