Investing in proper air filtration in swine farms is imperative to raising and farrowing healthy pigs and piglets. Not having quality air filtration can lead to the spread of pathogens and viruses especially PRRS (Porcine Reproductive and Respiratory Syndrome Virus) which can significantly impact your herd, productivity, and operating costs. Protecting your herd from the aerosol transmission of PRRS, Swine Influenza, and Mycoplasma is the utmost priority to ensure a healthy herd. Because each farm is unique there is not a one size fits all solution, however we recommend using two stages of filtration to help safeguard your herd from common swine illnesses. To ensure maximum protection from the spread of illnesses and viruses, we recommend a MERV 8 or higher rated pleated air filter as a pre-filter (first stage filtration) and a HEPA V-Cell High Efficiency Mini-Pleat filter for the second (final) stage of filtration, rated at 99.99% efficiency, catching particles as small as 0.3 micron.
Common Swine Virus and Pathogen Aerosol Sizes:
- Swine Influenza Virus: .080 - .120 micron
- PRRSV: .050 - .065 micron
- Porcine Circovirus (PCV2): .0017 - .0022 micron
- Mycoplasma: 0.3 - 0.9 micron
The common swine virus and pathogen aerosol sizes listed above are smaller than the 0.3 micron that HEPA filters are able to trap. However, these aerosols are carried by bioaerosols that are usually 0.4 – 0.7 micron and are easily trapped and filtered by high efficiency HEPA filters, protecting swine herds from the spread of illnesses and viruses. Particles and aerosols are also filtered by the filtering method of impaction, interception, and diffusion.
Recommended Filters for Swine Farms:
First Stage: The Astro-Pleat MERV 8-13 pleated filter captures fine dust and particles before the air passes through the final stage of filtration. The pleated filter can extend the filter life of the more costly final stage air filter by capturing the larger particles first.
Final Stage: The SureCell HEPA Mini-Pleat V-Cell is used as the final stage of air filtration and traps and stops the transmission of aerosol-spread pathogens and viruses. Capturing up to particles and droplets as small as 0.3 microns in size.
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