Common filtration precision ranges and corresponding particle examples

1. Coarse filtration: Coarse filters  have a wide range of filtration precision typically, generally between 50 μm and 500 μm. They are mainly used to filter larger particles or impurities, such as leaves, sand and gravel, etc., to protect the equipment and pipelines in the system.

2. Medium filtration: The filtration precision range of medium filters is between 10 μm and 50 μm typically. They can filter medium-sized particles effectively，such as sand, mud, fish scales, etc., and are suitable for some applications that require a relatively high filtration effect.

3. Fine Filtration: Fine filters have a narrower filtration accuracy range typically, usually between 1 μm and 10 μm. They can filter out small particles such as bacteria, viruses, pollen, etc. They are suitable for applications where extremely high air or liquid quality is required, such as in pharmaceuticals and food processing.

4. Ultra-fine Filtration: Ultra-fine filters have extremely small filtration accuracy, typically ranging from 0.1 μm to 1 μm. They can filter extremely small particles, such as microorganisms and smoke particles, and are widely used in industries with strict requirements for environmental air quality, such as clean rooms and laboratories.

It should be noted that the filtration accuracy of the filter is not only determined by its design and manufacture, but also affected by usage conditions, particle properties, and other factors. When choosing a filter, the appropriate filtration accuracy should be determined based on specific application requirements and filtration requirements.

Overall, as the filtration accuracy improves, the filtering capacity of the filter will also increase. However, this will also lead to an increase in resistance and maintenance costs. Therefore, when choosing a filter, it is necessary to comprehensively consider factors such as filtration accuracy, flow requirements, actual application environment, and economic factors to find the most suitable filter solution.