| http://www.w3.org/ns/prov#value | - The particle sizes of the aerosols may vary within a range of from approximately 0.01 to approximately 100 ??m, the lower limit lying at approximately 10 to approximately 20 nm, and particularly advantageous effects are achieved with a particle size of from approximately 0.05 to 1 ??m, for example approximately 0.1, 0.2, 0.4, 0.8 or 0.9 ??m.
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