Defending against even a simple airborne attack may require a complex
ventilation safety plan - or at the least, a well thought-out
strategy. Sensor capabilities, sensor placement, response speed, and
the general ventilation system are some of the factors that play into
protecting occupants (and even property) in the case of something
worse than an accident.
ANSI/ASHRAE Standard 52.2-1999 provides a new selection tool. A member of the authoring committee explains the Standard and introduces MERV to the process.