What is considered an "effective" air cleaning device ?

Shaughnessy R., Sextro R.
Year:
2005
Bibliographic info:
Indoor air, Vol 15, Supplement 11, 2005, abstract for the 10th international conference on indoor air quality and climate, pp 6

In this paper, the authors comment on the testing process of portable air cleaners whose test protocol is based on the measured decay rate of contaminant concentrations with the air cleaner operating compared with the measured decay rate when the air cleaner is turned off. The resulting metric, the clean air delivery rate (CADR) allows an intercomparison of performance among various air cleaners along with a comparison of air cleaner operation to other contaminant removal processes.

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