Filtering efficiency is the most important indicator of the air filter, which refers to the percentage of the ratio of the difference in air dust concentration before and after the filters in the rated air volume. For clean air conditioning systems, different levels of filters are usually used in series, and if there is a filter in series, its total efficiency: The penetration rate and filter efficiency filtering efficiency are parameters that measures the air filter to capture dust capability. It is also possible to evaluate the good and bad of the filter using penetration, and penetration rate refers to the percentage of dust concentration of air after filtration and the dust concentration of the dust filter, which can be used to indicate that the penetration rate can be clearly represented. The air before and after the filter is dusty, and it is more intuitive to evaluate the performance of the high-efficiency filter.

\"Air Clean \" can be understood from two associated aspects: First, the air is purified, indicating the air clean \"behavior \"; Second, the clean \"state \" in the clean air. The purpose of air cleansing is to make the contaminated air to the state of production, life, or reach a cleanliness. Air cleanliness refers to the degree of cleaning of the air. Cleaning degree is usually expressed in a certain volume or a certain amount of particle size, quantity or mass of the contaminated substance contained in the air. For example, in each cubic meter air, a suspension particle containing greater than or equal to 0.5 micrometers is X, that is, clean degree ≥ 0.5um, and the particles are XPC / m3. As another example, the mass of dust particles in each cubic meter is ymg, and its cleanliness is expressed in ymg / m3. Air purification is a means of contaminated air into clean air with some means, methods and equipment. Due to the purpose of air purification and the object, the content, method, and balance of purification

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The clean room is mainly based on indoor cleanliness, airflow form, control object, indoor net high and structural characteristics. According to the classification of indoor cleanliness, it is divided into level 1, 10, 100, 1000, 10000. Classification by control target is divided into industrial clean room and biological clean room. Industrial clean rooms mainly in the air, the suspended dust particles are controlled, and the biocrecipitation chamber is mainly suspended bio-particles (microorganisms) to control objects. According to the indoor height classification, it can be divided into a low-level clean room and a high-rise clean room. The low-rise clean room has a net higher than 3m, and the latter high-rise clean room has exceeded 3m. Industrial clean room industrial clean rooms with no life particles (including inorganic particles and organic fine particles). It mainly controls the pollution of lifeless particles on the working object, which is generally maintained inside. It is suitable for precision industrial (precision bearings, etc.), electronic industry (integrated circuits, etc.), aerospace industry (high reliability), chemical industry (high purity

How to choose an air purification filter? When purchasing, of course, we must pay attention to the quality. After all, good quality can reflect the high cost performance. Of course, we also need to pay attention to the environment of use, so that the air purification filter can work better. Puri