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April 25, 1985 N1,1111r;-al. P.Q. file: :II.#;
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Tvlex/Tilex 055-60073
Mr. A. L. Heard
British-American Tobacco Co. Ltd.
GR & DC
38 Regent's Park Road
MA I I brook, Southampton S09 IPE P/7
England <%
Dear Alan,
Please find enclosed a copy of ITL Research Report #174 which
describes an Investigation of the influence of smoker behaviour on both the
total and puff by puff deliveries of two cigarettes of similar total tar
delivery but different subjective characteristics. The purpose of the study
was to assess the effect of smokers' perceptions of a product on their manner
of smoking, the deliveries achieved and their ultimate assessment of a
particular product.
In order to achieve the necessary subjective difference between the
two samples one of the cigarettes was designed using the Filtrona COD filter.
The COD filter is a low efficiency high pressure drop filter and was used to
design a cigarette with a reduced carbon monoxide to tar ratio. It was
therefore of particular interest to us to find that although the human mouth
deliveries were greater than the deliveries under standard machine conditions,
human tar:nicotine and carbon monoxlde:tar ratios were in close agreement
with machine delivery ratios. In addition, we found that human mouth
deliveries and smoking parameters tended to decrease as the cigarettes were
smoked, as opposed to the normal Increasing trend found under machine
conditions. Both these points are of interest for future developments.
With best regards,
Yours sincerely,
S. R. Massey
ON
BATCo document for Province of British Columbia 13 April 1999