In the last three decades there has been an increasing emphasis on the importance of the use of fidelity assessment on improving the science of psychological, social, and behavioral research.
A cleanroom is an area or enclosure in which the air has to be cleaned to a defined particle limit, usually in particles per cubic foot. In the United States most cleanrooms are discussed in terms of Classification Limits.
Class: Defines the limit or measurement that a room will perform to in particles per cubic foot at 0.5 micron or larger. Cleanroom: A room, enclosure, and or environment in which you move the air by way of supply and return locations to control the airborne particle levels and in some cases temperature and humidity.