Do you know the classification of commonly used filters

Do you know the classification of commonly used filters

The impurities contained in the compressed air of the pneumatic system are divided into four categories: solid dust, moisture, oil mist and odor. In order to meet the requirements of different industrial sectors on the quality of compressed air, the corresponding filters are also divided into four types, and each type of filter is divided into several levels according to the different filtering accuracy, thus forming a complete series of compressed air filters.

　　As the national standard for the classification of compressed air filters has not yet been established, the names, model specifications, and other identification marks of the same functional filters are not uniform in various documents or product catalogs of different manufacturers.