This document is applicable to filter media (virgin granular activated carbon, silica sand and silica gravel, pumice, pyrolyzed coal material, anthracite and calcium carbonate) used for filtration of swimming pool water, with or without chemical action. It describes the characteristics of filter media and specifies the requirements and the corresponding test methods for filter media. It gives information on their use in swimming pool water treatment.
This document does not concern powdered diatomaceous earth, perlite, zeolite and any other filter media used with filter cartridges or similar filter elements.
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