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中文简体Whether you are looking for an air purifier to keep the air in your home clean and fresh or simply want to get a better night's sleep, the Bissell 2678 air220 Replacement Filters for Pre-Filter and 2677 Activated Carbon Filter Included (1 Set) is the unit for you. It is not only compact and lightweight, but also features four unique True HEPA filters. These filters are designed to remove airborne pollutants and allergens as well as the microbes that cause cold and flu.
The Bissell 2678 air220 Replacement Filters for Bissell Air320 Air220 2609A Air Purifier also comes with a few other features. For instance, the unit has an ionizer that produces negative ions. These ions, in conjunction with the True HEPA (H13) material, help to capture and trap airborne particles. It also has a high-speed fan that helps to move air through the filters. The unit also emits ozone.
As for its filtration process, the Bissell 2678 air220 Replacement Filters for Bissell Air320 Air220 2609A Air Purifier uses four True HEPA (H13) filters. These filters can capture 99.9% of dust and other airborne particles, along with fine particles as small as 0.1 microns. In addition to these filters, the unit uses an activated carbon filter to remove smoke and household odors. This feature is especially useful for smokers, as it can reduce both VOCs and pollutant particles.
Function: antibacterial, mites removal, odor removal, photocatalyst, cold catalyst
Application scenarios: Offices, shopping malls, schools, public places
HEPA stands for High Efficiency Particulate Air. It is a standard defined and developed by the U.S. Department of Energy during the 1940s as part of their efforts to contain the spread of particles and contamination resulting from nuclear testing. This standard has since moved into the consumer market and has become commonplace for air purifiers.
To meet the HEPA standard, the filter must remove 99.97% or more of all particles which are 0.3 microns (micrometers) in diameter. In other words, for every 10,000 particles that are 0.3 microns in diameter, only three of them pass through.
The HEPA standard traps very small particles,many of which are invisible to the human eye and harmful to your health. To provide perspective for size, human hair is approximately 80-100 microns in diameter.
