51.2561—Average moisture content.
               		
               	 	
               	 	
               	 	               	 	               	 	               	 	               	 	
               	 	
    
        
        (a) 
         Determining average moisture content of the lot is not a requirement of the grades, except when kernels are specified as “very well dried.” It may be carried out upon request in connection with grade analysis or as a separate determination.
     
    
        
        (b) 
         Kernels shall be obtained from a randomly drawn composite sample. Official certification shall be based on the air-oven method or other officially approved methods or devices. Results obtained by methods or devices not officially approved may be reported and shall include a description of the method or device and owner of any equipment used.