Clean Room

This mixed type of system is very popular as the best conditions are provided only where they are needed and considerable cost savings are available for use in this room. Shown in Figure 1.9 is a horizontal flow cabinet, this being one of the simplest and most effective methods of controlling contamination. In this bench the operator's contamination is kept downwind of the critical process. Also available are a variety of styles of vertical flow systems which may vary in size to encompass a person's manipulations or large pieces of machinery.

Figure 1.9 Horizontal flow cabinet Isolator or Minienvironments