Primary Filter vs. High-Efficiency Filter: How Much Do You Know About the Differences?
2024.09.09
In the field of air purification, both primary filters and high-efficiency filters play crucial roles, but there are significant differences between them. Today, let's take a closer look at the differences between primary filters and high-efficiency filters.
I. Filtration Precision
Primary filters are mainly used to filter large particles of dust, hair and other impurities in the air, and the filtration precision is relatively low. Generally speaking, primary filters can block particles larger than 5 microns.
High-efficiency filters have extremely high filtration precision and can filter out particles as small as 0.3 microns or even smaller in the air, such as bacteria, viruses, PM2.5, etc.
II. Structure and Materials
- Primary filter: Usually made of non-woven fabric, synthetic fiber and other materials, the structure is relatively simple. These materials have characteristics such as low cost and good air permeability.
- High-efficiency filter: Generally, ultra-fine glass fiber filter paper or polypropylene and other high-performance materials are used. Its structure is more complex and usually includes filter paper, frame, sealant and other parts.
III. Application Scenarios
- Primary filter: Widely used in primary filtration of ventilation systems, such as pre-filtration of air conditioning systems and air purifiers. It can protect subsequent filters and equipment and extend their service life.
- High-efficiency filter: Mainly used in places with extremely high requirements for air quality, such as hospital operating rooms, electronic chip production workshops, pharmaceutical factories, etc. These places need to strictly control the particle content in the air to ensure the smooth progress of the production process and the health and safety of personnel.
IV. Service Life and Maintenance
- Primary filter: Due to the relatively low filtration precision, the degree of easy clogging is relatively small, so the service life is relatively short. Generally, it needs to be cleaned or replaced regularly. The cleaning cycle is usually 1-3 months, and the replacement cycle is 3-6 months.
- High-efficiency filter: Because of its high filtration precision and easy clogging, the service life is relatively short. Generally, it needs to be regularly detected and replaced according to the actual usage situation. The replacement cycle is usually 3-12 months.
V. Price Difference
Due to the relatively simple materials and manufacturing processes, primary filters are relatively inexpensive. While high-efficiency filters are relatively expensive due to the use of high-performance materials and complex manufacturing processes.
In conclusion, there are obvious differences between primary filters and high-efficiency filters in terms of filtration precision, structure and materials, application scenarios, service life and price. In practical applications, we should choose the appropriate filter according to different needs to achieve the best air purification effect.
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