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Sigma KEE - FineParticulateMatter
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fine particulate matter
FineParticles are ParticulateMatter with an approximateDiameter less than 2.5 Micrometers.
Relationships      
Parents particulate matter ParticulateMatter is a mixture of very small solid or liquid matter suspended in Earth's atmosphere with an approximateDiameter of less than 1,000 Micrometers (0.001 mm).


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