IATA Dangerous goods declaration

[NEIL_at_RCNET@smtpgw.kfsh.gwumc.edu]

     The radionuclide production people have just been given a photocopy of 
     a new version of the IATA "SHIPPER'S DECLARATION FOR DANGEROUS GOODS" 
     form. It has an extra column for "Packing Group" which was not on the 
     old form. I assume that the photocopy has come from the IATA Dangerous 
     Goods Regulations. Unfortunately, the edition we have (29th Edition , 
     effective 1 January , 1988) does not have any reference to the 
     "Packing Group." Can anybody tell me what this column refers to.
     These forms will accompany packages containing cyclotron produced 
     radiopharmaceuticals.