What are Filter Grade Abbreviations?

2024/08/09

Filter grade abbreviations refer to the standardized representation of filter performance in terms of filtration efficiency. These abbreviations are expressed in short and easy-to-remember letters, typically "F" or "M". Different grade abbreviations correspond to different filtration efficiencies, with higher filter grades offering better filtration performance.

Filter Grade Abbreviations and Their Corresponding Filtration Efficiencies

F5 Grade: Capable of filtering particles with a diameter of 5μm, primarily filtering large particles such as sand and dust.
F6 Grade: Capable of filtering particles with a diameter of 3μm, primarily filtering pollen, bacteria, and small dust particles.
F7 Grade: Capable of filtering particles with a diameter of 1μm, primarily filtering smoke and other fine particles.
F8 Grade: Capable of filtering particles with a diameter of 0.5μm, primarily filtering car exhaust, bacteria, smoke, and other fine particles.
F9 Grade: Capable of filtering particles with a diameter of 0.3μm, primarily filtering ultrafine particles, bacteria, viruses, and other particles smaller than 0.3μm.

How to Properly Choose a Filter

When selecting a filter, one should choose the appropriate grade based on the desired filtration efficiency. It is also important to consider the applicability and lifespan of different types of filters to avoid improper use that could shorten the filter's lifespan or reduce its filtration efficiency.

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