Tobacco Documents Online

DR. F. ~L~SLAM. lu~;." DJW/JP/46C. I , D.J. WOOD. 7th June, 1971. MEXICO - PREDICTION OF T.P.M. DELIVERIES I refer to Paul Gannaway's note of the 18th May, and to a 'phone call from Dr. S.J. Green (taken by K.D.K.) on the 3rd June, asking for information relating petrol ether extractable content of tobacco with T.P.M. delivery. You %sill remember that we had lengthy discussions last year on the possibility of predicting smoke deliveries from simple measurements ~zhich do not involve the manufacture of cigarettes, bi~y note of the 24th August, 1970 (File 46C) refers to this %~lhole subject. Canada and Hamburg both maintain that it is necessary to smoke cigarettes made from the individual grades in a blend in order to control deliveries of that blend. Leaf Department, Millbank, after consultation with R. a D.E., have now decided to do the same (Project Predichion of T.P.M./nicotine ~atios (.as distinct from absolute deliveries) does appear to be possible - within limits. I.T.G., Bristol, assert that both nicotine content and petrol ether extractable content of tobacco are useful in making such predictions (sec DGF/VC/45D of 2@th July, 1966, and DJW/JP/46C of 22nd October: 1970). N. & D.E., on the other hand, find that better predictions result when these are based solely on ti%e %obacco nicotine content (see Report No. L.256-R and Memo DEC/YP/I of 19th March, 1971). %. blr. D.2. Conway. R. & D.E. File i. BATCo document for Mayo Clinic 19 June 2002