CHεST®

The CHεST® simulates conditions and particles produced during both respiratory exhalation and coughs/sneezes. The user inputs the length of the aerosol generation period and the interval in between generation. The syringe pump works with the system to deliver test article solution at programable feed rate. The system can also be set up to operate in gravity fed mode without the syringe pump. In this configuration the test article solution is gravity fed and controlled via a needle valve.

Typically, the particles produced during coughs or sneezes will be larger and at a higher velocity than particles produced when an individual is exhaling. To simulate both conditions the BLAM is placed either inside or outside of a jar to simulate aerosols generated during smooth exhalation or more forceful coughing and sneezing. When the atomizer is operated inside the jar (Respiratory Exhalation or Nebulizer Mode), the particle size distribution is altered, and the velocity of the particles exiting the exhaust is reduced. When the atomizer is operated outside the jar (Cough/Sneeze Mode), some of the particles may be as large as 10 microns, and the velocity can be adjusted to simulate actual coughs/sneezes.

The BLAM can be configured to generate aerosols into a large volume chamber or room or alternatively, it may be mounted into sanitary piping with the optional BLAM Sanitary Flange Adapter.