ISO 22031:2021

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ISO 22031:2021, titled "Sampling and test method for cleanable filter media taken from operating industrial pulse-jet filtration systems," specifies procedures for sampling fabric filter media from operational filter systems and evaluating their degradation. It applies to both woven and nonwoven fabric filter media. The standard outlines methods for removing used filter media from dry-type filtering dust collectors, preparing test specimens by removing dust, and measuring relevant parameters to assess the condition of the filter media