868.1890—Predictive pulmonary-function value calculator.
               		
               	 	
               	 	
               	 	               	 	               	 	               	 	               	 	
               	 	
    
        
        (a) Identification.
         A predictive pulmonary-function value calculator is a device used to calculate normal pulmonary-function values based on empirical equations.
     
    
        
        (b) Classification.
         Class II (performance standards).