I am trying to think my way through this and can't quite manage it yet. 
I have a log that has stages but the criteria is based upon the substrate chosen. 
    
        
             
    
If Hot dip is selected, the temperature spec is 120-160. 
If Cold Rolled Steel is selected, the temp spec is 120-175. 
I need the conditional formatting in the same cell, different specs but to turn red to alert the operators and managers of an "out of spec" condition. 
Help appreciated!!