The new TSI DUSTTRAK Environmental Enclosure Model 8535 can be used in conjunction with the DUSTTRAK aerosol monitor for many different applications. While its primary use is in outdoor applications it may also be advantageous in indoor industrial applications to provide additional security and protection for the instrument. The enclosure should be set up in a location where it can easily sample the aerosols of interest. It should be placed away from obstructions which may affect wind currents. The sampling inlet on the Environmental Enclosure samples most efficiently from 0 to 22 mph/0 to 36 kph.