METAL SHIELD 



3!/^'^ ^-MANIFOLD 

 INLET 



s'^' 



■f 



^- 



,8 DIA PLASTIC CYLINDER 



-LIGHT HOLDER 



• 32 W WESTINGHOUSE 

 CIRCULAR FLUORESCENT 

 LAMP 12" DIA, 



GROOVES FOR 

 CIRCULATION UNDER JARS 



SECTION A-A 



Figure 5. --Illuminated water bath for holding water samples inoculated with C^^ . 



