Level H11, H12 and H13
The grades of high-efficiency filter elements mainly include H11, H12 and H13. These grades are mainly used in high-efficiency particulate air filters (HEPA). HEPA filters are known for their ultra-high filtration efficiency, capable of intercepting more than 99.97% of particles 0.3 microns and above in the air. H11, H12 and H13 levels correspond to 99.97%, 99.99% and 99.995% filtration effects respectively. Among them, the H13 level filter performs particularly well in terms of filtration performance. In addition to being able to filter out PM2.5, dust, dander, pollen and other particles In addition to pollutants, it can also effectively intercept cigarette smoke and all bacterial microorganisms. Although the H13 HEPA filter is a high-end configuration on the market and is mainly used in the medical field, there are still a few household air purifiers that use this level of filter.
In addition, water purifier filters have different grades and functions. For example, the PP cotton filter element is mainly used to remove large particle impurities such as rust, sediment, colloids, and suspended solids in water, and the replacement time is 3-6 months; the granular activated carbon filter element is mainly used to remove chlorine, deodorization, and deodorization. The replacement time is 6-12 months; the filtration precision of the RO reverse osmosis membrane filter element is as high as 0.0001 micron, which can remove calcium and magnesium ions, bacteria, inorganic substances, heavy metal ions, etc. in the water, leaving only water molecules and some beneficial mineral ions to pass through. The replacement time is about 1-3 years. The combined use of these filter elements can purify tap water layer by layer, intercept harmful substances, and provide safe drinking water.