NANO FILTERS

                                                         NANO  FILTERS

•         The current industry standard for nano filtration devices is 0.3 microns, or 300 nanometers.

•         This is considered adequate filtration because it can prevent the passing of water molecules, which are the usual transporters of infectious diseases.

•         Many of the deadliest viruses are much smaller than 300 nm, and can pass through these filters.

   NANO  FILTERS 

•         The next generation nano filters that are being produced provide filtration of particulate sizes greater than .027 microns, or 27 nanometers.

•         Viruses that can pass through current filtration devices but not nanofilters are: Hepatitis B, HIV, Ebola, Hanta, Influenza A/B/C, and SARS.

•         It seems inevitable that surgical masks, hospital air filters, and other critical filtration devices will switch to this technology.

Filters in HVAC

•         The HVAC requires higher standards for air filters because of the importance of indoor air quality.

•         Consumers are becoming aware of detrimental health effects in relation to exposure of airborne contaminants like seed particles, pollen, fibrous particles, dust, carbon black, smoke and aerosols in the atmospheric air.

•         In hospital operation rooms, clean air which is free of harmful bacteria (HEPA filtration) is needed.  Bacteria size can range from less than a micron to 10 microns.

•         The current HEPA filters used worldwide now are based on microglass, wet-laid paper with minimum efficiency of 99.95% for 0.3 micron particles.

•         The new generation filters ULPA (Ultra Low Penetration Air Filters) have efficiency of 99.9995% for particles of 0.1 micron.

•         Filters for residential air conditioning systems are usually made of a thick low-density mat of polyester or glass fibres to give high air flow rate and good dust collection capacity.

•         Use of electro statically charged fibres are finding increasing use in this type of filters.

Filters in HVAC