Providing broad guidelines for setting air cleaning targets may very well require an under-standing of the effects of indoor air quality in relation to the application. In the construc-tion and operation phases of building construction and operation, consultants, project managers, and building operators occasionally refer to the parameters, classifications, and recommendations established by leading organizations such as ISO, ASHRAE, and sev-eral other institutions as benchmarks. The following brief examples illustrate our Air Fil-tration product line.