Page 50 - Climate Control News Magazine December-January 2022

Hot Products
LEFT: Purafil
has a state-of-the- art laboratory to help customers classify air quality for each individual environment.
BELOW: Figure 1. Depiction of filter surface comprised with PuraWard
fi ers.Enlarged images of the microscopic surface show embedded and accessible copper/ silver ion zeolitic carriers on the fiber surface.
Filters combat airborne virus transmission
STRATEGIES FOR MAXIMISING safety through the COVID-19 pandemic and ongoing reopening of schools, restaurants, and other public spaces continue to evolve worldwide.
Airborne transmission of the virus has been commonly identified as the primary route of transmission – so as a result, implementing new technologies to address this new challenge to- wards indoor air quality (IAQ) is a top priority as Australia navigates the “new normal”.
Purafil’s PuraWard air filter serves as an ideal solution for the safe and effective removal of air- borne microbial contaminants.
“UNLIKE FILTRATION MATERIALS THAT ARE SPRAYED ON, ANTIMICROBIAL ION CARRIERS ARE EMBEDDED INTO PURAWARD FIBRES.”
Available in various sizes and particulate fil- tration grades, PuraWard filters are comprised of specialised polymer fibres engineered with a US EPA-registered antimicrobial agent. The addi- tive supplies silver and copper ions which syner- gistically inactivate microorganisms through disruption of cellular respiration, inhibition of intercellular transport, structural degradation of viral protein coats, and other pathways.
Unlike filtration materials that are sprayed or otherwise treated with similar additives, the an- timicrobial ion carriers are embedded into Pura- Ward fibres (pictured).
This prevents potential leaching of the chemi- cal agents into airstreams, ensuring safe and clean eluting airstreams where filters are used.
Alternative air cleaning systems relying on ionisation, photocatalysis, and other electronic technologies also advertise antimicrobial claims. However, studies around these technolo- gies have found these systems portray variable efficacies in end use.
These systems pose the risk of generating poten- tially harmful contaminants such as ozone and formaldehyde – which can create even more seri- ous health complications for inhabitants of treated spaces. Because PuraWard leverages well-estab- lished and non-hazardous filtration technology, there is no risk of eluting harmful by-products.
In contrast to many other air cleaning device manufacturers, Purafil offers third-party effica- cy microbial removal data upon request to end- users – backing up material claims on removing potentially harmful biological contaminants.
PuraWard filter media is available either in pleated form for use in ‘Vee-Form’ filters or can be provided in a Pocket filter configuration. This means that existing sites can be easily upgraded to PuraWard media with no new holding frames or additional work required.
In the case of Vee-Form filters simply exchange your existing filters for the improved safety and protection of PuraWard. For Pocket filters, Pura- ward can be offered in an En:779 F8 efficiency and in industry standard sizes. This allows customers to add this advanced level of protection to their site immediately by replacing their filters.
To learn more about the PuraWard technology and other ways to improve indoor air quality, please reach out to Windsor Filtration Australia; the official Purafil distributor in Australia & New Zealand.
Email: aust.sales@windsorgroup.com.au or visit https://www.windsorengineering.co.nz/ air/filtration-australia/
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