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  • 29/07/2022
    What are the testing methods of the 8 Best high efficiency filters?

    SFFILTECH believes that from the evolution of international high efficiency filter testing standards, it can be seen that the test methods for high efficiency air filters are mainly sodium flame method, oil mist method, DOP method, fluorescence method and particle counting method. (1) Sodium flame method Sodium flame method originated in 1969 in the United… Continue reading What are the testing methods of the 8 Best high efficiency filters?

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