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Standards Development
This part of ISO 16890 specifies the aerosol production, the test equipment and the test methods used for measuring fractional efficiency and air flow resistance of flat sheet media used in air filters for general ventilation.
It is intended for use in conjunction with ISO 16890- 1, ISO 16890- 2, ISO 16890- 3 and ISO 16890- 4. The test method described in this part of ISO 16890 is applicable only for air velocities between 0,.05 m/s (10 ft/min) and 0,.67 m/s (133 ft/min), referring to a test rig with a minimum nominal face area of 0.09 m2 (1ft2).
ISO 16890 (all parts) refers to particulate air filter elements for general ventilation having an ePM1 efficiency less than or equal to 99 % and an ePM10 efficiency greater than 20 % when tested as per the procedures defined within ISO 16890 (all parts). This part of the standard is limited to the media used in these filter elements.
Air filter media outside of this scope are evaluated by other applicable test methods, (see ISO 29463- 3).
The performance results obtained in accordance with ISO 16890 (all parts) cannot by themselves be quantitatively applied to predict performance in service with regard to efficiency and lifetime. The results of this test should not be assumed to predict filter performance based on the media flat sheet testing.
There is no current regional or global standard method of testing for flat sheets of media used in general ventilation air filtration devices. Various media manufacturers have their own internal testing methods, but the lack of an industry common standard does not allow a user or purchaser of media to properly compare or evaluate the media from one manufacturer to another. Different test protocols using different materials will give different results leaving the user unable to quickly or easily compare materials. Development of this new ISO standard method of test will allow users to accurately compare the performance of various media samples tested using a standard test protocol using standard materials and equipment
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