ISO 23742:2024

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ISO 23742:2024, titled "Test method for the evaluation of permeability and filtration efficiency distribution of bag filter medium," specifies methods for assessing key properties of both woven and non-woven bag filter media. These properties include thickness distribution, area mass, gas permeability, and collection efficiency. The standard also provides guidelines for sampling specimens—detailing position, size, and number—to accurately determine the performance distribution of the filter medium.