For example, as illustrated in Figure 1, some of this work has considered
‘‘macroscale’’, building-wide ventilation parameters, such as how to condition air temperature and humidity on a building-wide basis, what air supply rates to rooms should be, and the air distribution patterns to the building as a whole.6 Other work has focused on maintaining fume hood containment at reduced face velocities, in order to limit the amount of uncontaminated air exhausted from the laboratory space. Compared to building wide practices, this perspective considers ‘‘microscale’’ phenomenon in a small section of the laboratory – primarily, air flow patterns in the hood and its immediate vicinity.7 Specific criteria for the management of these elements areincluded in the requirements for the LVMP defined by theANSIZ9.5 Standard for Laboratory Ventilation.