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中文 (中国)Air filter “filtration efficiency” is the amount of dust being captured with the original dust content ratio. Air filtration efficiency Air filter filtration efficiency is the amount of dust being captured with the original dust content ratio: = Filter efficiency filter traps dust quantity / = 1 – upstream of the dust content of air downstream of the amount of dust / air upstream of the amount of dust Efficiency meaning seems simple, but it’s meaning and value because of the different test methods and different. The factors that determine the filtration efficiency of dust “quantity” means varied, since the calculation and measured filter efficiency values are also varied. Practical, there is dust on the total weight, the number of particles of dust; and sometimes the amount of a typical particle size for dust, and sometimes the amount of all the particle size of dust; also indirectly reflect the concentration of the amount of light using a specific method (colorimetric ), (fluorescence); there is a certain amount of transient state, but also the weighted average amount of dust test the efficiency of the whole process of change in value. Only the same filter using different methods to test the efficiency of the measured value will be different. The countries, the manufacturers test method used, the filtration efficiency will be impossible.
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