Most frequently asked questions regarding UV-C

UV-C is a type of ultraviolet light with a wavelength between 200 and 280 nanometers. It is the most effective type of UV light for disinfection and is commonly used for this purpose in various applications.

UV-C works by damaging the DNA or RNA of microorganisms like bacteria, viruses, and mold spores, which prevents them from reproducing and causing illness. The radiation from UV-C light disrupts the genetic material of these organisms, which either kills them or renders them harmless.

The benefits of using UV-C technology include the ability to disinfect air, water, and surfaces without the use of chemicals, the ability to kill a wide range of microorganisms, and the ability to reduce the spread of airborne illnesses.

UV-C can kill a wide range of microorganisms, including bacteria, viruses, mold, and fungi.

The time it takes for UV-C to kill microorganisms depends on factors like the type and density of microorganisms, the intensity of the UV-C light, and the exposure time. In general, it can take anywhere from a few seconds to several minutes for UV-C to kill microorganisms.

At Cognituv, we use the latest CFD and photonics simulation software to predict the exact wattage and exposure time needed to ensure a certain dosage and log reduction of disinfection.

UV-C is a proven technology for killing or inactivating a wide range of microorganisms, including bacteria, viruses, and fungi. It is effective against both drug-resistant bacteria and pathogens like SARS-CoV-2, the virus that caused COVID-19.

 UV-C disinfection is also a chemical-free and environmentally friendly solution. Unlike other disinfection methods that rely on harsh chemicals, UV-C disinfection does not create harmful byproducts or contribute to the development of antibiotic resistance. This makes it a particularly attractive option for use in sensitive environments like hospitals and schools.

The return on investment (ROI) for UV-C disinfection solutions can vary depending on several factors, including the type of system, the size of the space being treated, the level of contamination, and the cost of the system and installation.

In most cases, UV-C disinfection systems can provide a relatively quick ROI, especially in industries where preventing the spread of infection is critical, such as healthcare or food processing. For example, a UV-C disinfection system installed in a hospital could potentially prevent costly outbreaks of hospital-acquired infections and reduce the need for expensive cleaning and disinfection protocols.

In other cases, the ROI for UV-C disinfection systems may take longer to achieve, particularly for smaller facilities or spaces with relatively low levels of contamination.

Ultimately, over time, UV-C disinfection can provide cost savings by reducing the need for chemical disinfectants, improving air quality, and extending the life of HVAC equipment.

Common applications of UV-C technology include air purification, water treatment, surface disinfection, and food processing. All of these industries contain well validated peer-review literature that allows us to make evidence-based solutions for these industries.

Yes, UV-C is commonly used for water treatment to disinfect water by killing microorganisms. UV-C is effective against many types of waterborne pathogens and is often used in combination with other water treatment methods.

At Cognituv, we sell IP68 rated UV-C disinfection products that can be used in a wide variety of water disinfection applications.

Yes, UV-C can be used to disinfect surfaces like countertops, floors, and medical equipment. UV-C is effective against a wide range of microorganisms that can cause illness.

UV-C can be harmful to humans and animals if they are exposed to it for extended periods. However, in most applications, UV-C is used in a way that is safe for humans and animals.

The effectiveness of UV-C treatment is measured by measuring the irradiance of the UV-C being emitted to ensure a certain wattage of energy will be delivered to a targeted area with enough power. 

At Cognituv, we have partnered with experts in UV-C sensing to perform rigorous testing and validation to ensure our products emit enough UV-C wattage to properly disinfect pathogens at a determined log reduction.

The installation and maintenance of UV-C systems depend on the specific application. In general, UV-C systems are installed by a professional technician and require regular cleaning and lamp replacement to ensure optimal performance.

At Cognituv, we can offer a preventive maintenance schedule to make replacing lamps, filters, and upkeep very easy.

Regulatory requirements for UV-C disinfection can vary depending on the country, region, or industry. In the United States, for example, the Environmental Protection Agency (EPA) regulates the use of UV-C as a disinfectant for water treatment. In the healthcare industry, UV-C may be regulated by agencies like the Centers for Disease Control and Prevention (CDC) or the Food and Drug Administration (FDA).

At Cognituv we check with the relevant regulatory agencies or local authorities to ensure that our UV-C solutions are being used in compliance with any applicable regulations.

The cost of UV-C technology depends on the specific application and the size of the system. In general, UV-C technology can be more expensive than traditional methods of disinfection or purification, but it can also be more effective and have long-term cost savings. The cost of UV-C technology also varies depending on the brand, quality, and size of the system.

UV-C technology can be integrated into existing HVAC systems by installing UV-C lamps in the ductwork or air handling units. These lamps can help to disinfect the air as it circulates through the HVAC system, reducing the spread of airborne pathogens.

Disinfecting the evaporator coil with UV-C can help improve indoor air quality and prevent the spread of airborne pathogens. The evaporator coil is an important component of an HVAC system, responsible for cooling and dehumidifying the air as it circulates through the system.

Over time, the evaporator coil can become contaminated with mold, bacteria, and other microorganisms, which can then be circulated throughout the building via the HVAC system. This can result in poor indoor air quality, unpleasant odors, and even illness or infection among building occupants.

By installing UV-C lamps near the evaporator coil, the UV-C light can disinfect the coil and surrounding surfaces, killing or inactivating microorganisms and preventing them from being spread through the HVAC system. This can improve indoor air quality and reduce the risk of illness or infection among building occupants.

In addition to improving indoor air quality, disinfecting the evaporator coil with UV-C can also help reduce energy costs and extend the life of the HVAC system. Contaminated evaporator coils can become less efficient, requiring more energy to cool and dehumidify the air. By disinfecting the coil, the system can operate more efficiently, reducing energy costs and extending the life of the equipment.

Yes, safety precautions should be taken when using UV-C technology to prevent skin and eye damage. People should not look directly at UV-C lights, and should wear appropriate protective gear when handling UV-C lamps or systems. It is also important to follow manufacturer guidelines and to have UV-C systems installed and maintained by a professional.