Volume I - Section II - Animal Room Variations 
Page II ■ 7 
Figure 2.04 Original Change Station Design 
Due to concerns raised over the relative passiveness of the first station design, a second design 
was considered, as displayed in figure 2.05 based on a Laboratory Products Stay-Clean 
Workbench 30909B. The station had overall dimensions 1.50m (59”) x 0.86m (34”) x 1.93m 
(76”) high. This station also recirculated air, at 300 cfm (1.42e-l nr /s), but discharged a much 
higher percentage than the first design. In particular, 200 cfm (9.44e-2 m 3 / s) was discharged 
through grilles at the top of the station. The air makeup to compensate for this discharge was 
mounted at the front sill at the opening to the station. The station dissipated 660W. This heat was 
considered to be added to the air discharge at the top of the station. 
