Breaking through the haze

The report "China Environmental Analysis" shows that 7 out of the 10 most polluted cities in the world are located in China. Less than 5 out of 500 cities in China have air quality that meets the standards recommended by the World Health Organization. Every year, the number of premature deaths caused by air pollution in China reaches 350000 to 500000. PM2.5 in first tier cities of Beijing, Shanghai, and Guangzhou may cause 8500 deaths in a year.

The data caused by haze weather is shocking. On January 4, 2014, the National Disaster Reduction Office and the Ministry of Civil Affairs reported the natural disasters in 2013, including haze weather for the first time. Ordinary people not only sigh at the sky, but also start to find ways to break through the haze. Various electrical appliance manufacturers are coming up with solutions, with a wide variety of air purifiers and a mix of good and bad. How to distinguish and choose air purifiers? We are here to tell you the answer!

What does an air purifier purify?

Indoor air pollution can be roughly divided into suspended solid pollutants and gas pollutants. Air purification devices usually use filtration, electrostatic precipitator, and reactive oxygen technology to purify the air based on their working principles.

To achieve a certain level of cleanliness in indoor air quality, an air purifier must meet two necessary indicators: 1. It must ensure that the indoor air reaches a certain number of air changes (international standard is 5 times), and the CADR value divided by the room volume value should not be less than 5 (CADR, Clean Air Delivery Rate， The amount of clean air delivered per unit time. CADR is the clean air output ratio of an air purifier tested by the American Home Appliance Manufacturers Association (AHAM) according to strict testing standards. The higher the CADR value, the higher the purification efficiency of the purifier; 2. The primary purification efficiency of an air purifier must be high. If there are continuous sources of pollution indoors, air purifiers that meet these two indicators can keep indoor pollutants at lower concentrations.

At present, the most common type in the home appliance market is HEPA (High Efficiency Particulate Air), which refers to high-efficiency particulate air filters, in short, high-efficiency filters. According to European standards, equipment that can be called HEPA must have a filtration rate of 99.95% or higher for particles with a diameter of 0.3-0.5 microns (H13 standard, EN1822:2009). When purchasing the equipment, you can inquire about the filtration efficiency of the filter.

Selection and use of air purifiers

BESURE experts provide recommendations for consumers when choosing air purifiers: 1. Firstly, select the corresponding equipment based on user needs, and consider factors such as functionality and appearance according to indoor living conditions and applicable populations; 2. Evaluate the power consumption, air output, and other parameters based on the capability parameters of the equipment; 3. Choosing a safe source supplier, the reputation of a large brand provides assurance for product quality, and choosing a major retail chain store with a quality assurance system is also a good channel. After purchasing air purification equipment, pay attention to cleaning or replacement conditions to avoid secondary pollution.