Anti-Covid air-cleaning technology for schools explained

Sponsored: Bradley Watkins, operations director at Clenzair, looks at how we can keep schools open and safe in 2022

With pressure mounting on schools to stop Covid-19 spreading on their campuses, improving air quality has been identified as a viable solution that will keep staff and students safe and enable educational settings to remain open.

Most air-cleaning technologies have been around for decades but they have advanced over the years and are now being seen as a useful tool in the fight against coronavirus for schools who have continuously been disrupted for almost two years.

Advanced needlepoint bipolar ionisation (NPBI) air-cleaning technology – which has been proven to neutralise Covid-19 in third-party laboratories – can help keep schools open as we enter an uncertain stage in the pandemic in 2022.

Needlepoint bipolar ionisation: what is it?

Needlepoint bipolar ionisation is an ‘active’ air-cleaning system and is based on research, science and real-world data.

It works by neutralising particles from pathogens, including Covid-19, MRSA, bird flu, swine flu, Ebola and E coli, suspended in the air or on a surface in the room by introducing invisible air-cleaning ions into the airstream.

An ion is any atom or group of atoms that bear one or more positive or negative electrical charges.

High concentrations of ions are found wherever the air is cleaner, like high in the mountains or at the base of a waterfall, so NPBI is considered as ‘mother nature’s’ cleaning agent.


How is it used?

NPBI technology is typically installed in the duct mounting and air conditioning systems, but free-hanging fans can also be positioned in the ceilings. Ions from these products are created in their hundreds of millions at source and dispersed into the environment using airflow from the HVAC equipment or destratification fans to give an ion density to replicate a similar Covid neutralising environment as tested in laboratories.

The ions are completely harmless to humans but extremely reactive to contaminants and can agglomerate particulate matter. This means the ions can continuously increase the size of the dangerous smaller particulate matter that filters cannot catch and it will continue to bind particulates together until they are so big that they fall to the ground or can easily be captured in a filter.

About the product

NPBI is effective against viruses but also odours, noxious gases, VOCs, bacteria, smoke, mould and particulate matter including pollen and pet dander.

NPBI can be in operation 24/7 while people are present unlike when fogging is used in classrooms, which can also be contaminated again the moment a person enters it.

Most NPBI products are self-cleaning and the lifespan of the product is seven to 10 years with no replacement filters, bulbs or cells required. The system is certified to the UL2998 standard to demonstrate that it does not release ozone or volatile organic compounds. It holds ISO1600-3, ISO 16000-6 and ISO 16000-9 certifications to prove that no harmful by-products are created.

For more information visit or call 01480 831010

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