C02 meters have traditionally been used as indicators of indoor air quality. Since C02 or Carbon Dioxide is a gas expelled by humans when the C02 meter shows a lower amount, it indicates that the air is being renewed. If there is less concentration of CO2, there will also be less amount of other particles that can remain in that environment.
With the arrival of the pandemic and the transmission mainly by aerosols of the coronavirus, it has been recommended as a basic measure that we can take in a simple way, aerate or ventilate the spaces to renew the air, or use purifiers with filters. As a basic measure, the simple renewal of the air or its filtering helps in a certain way to release part of these aerosols.
A Carbon Dioxide meter will help us verify that ventilation is taking place properly, but it is not the best indicator to verify the disinfection of the environment for the prevention of infections in an effective way. However, if we only take measures such as using filter purifiers or opening the windows, CO2 meters can help us verify that part of the air is being renewed.
What more effective alternatives are there to air renewal?
One of the solutions that have proven to be most effective is the air disinfection using ultraviolet light. UV-C Air Disinfection Equipment perform a disinfection of airborne pathogens, inactivating their ability to produce infections.
How do these devices work? The equipment moves the air, being able to renew large volumes and make it pass through the body of the device, where lamps are placed, which emit Type C ultraviolet radiation, which disinfect the environment of microorganisms and complement it with some filters.
How is disinfection produced? Type C Ultraviolet Radiation has proven to be effective in directly attacking the genetic material of microorganisms (DNA and RNA), causing serious damage that prevents them from performing their vital functions, which include reproducing and therefore causing infections.
In the case of Goldensea UV devices used by Stonex UV-C air disinfection solutions have demonstrated excellent efficacy, with a reduction rate of microorganisms greater than 99,93%. They are effective against viruses such as covid-19 but also against bacteria, fungi, yeasts, spores and protozoa.
A CO02 meter may indicate high carbon dioxide values when using UV-C disinfection solutions, as they are not focused on reducing the amount of this gas, but on effective disinfection.. Disinfection using ultraviolet light does not replace part of the air with another with less carbon dioxide, but rather inactivates the microorganisms found in it.
A low CO2 value does not mean that the environment is disinfected, simply that the air has been partially renewed by a new one with less gas, although microorganisms can remain active in the environment.
Therefore, CO2 meters are a good option to verify the effectiveness if we take basic and more limited measures such as ventilation, air renewal and purifiers, but it is not an adequate indicator if we take more effective solutions in preventing infections such as air disinfection using Type C ultraviolet light.