DGF/SMS/46F
25 th October,1962
EFFECr OF STFN ON IRRITANT' PROPERTIES OF SMOKE
Two approaches have been tried to this problem,
differing slightly
in detail.
1. Dr. W.B. Fordyce in conjunction with the R. &
D. Sensory
Difference Panel
Extrect from QUARTERLY REPORT July-September 1962
"(2) As a preliminary to the study of the effects
of stem
processing on smoke propertiesp an experiment was
planned
In which the smoke properties of cigarettes
containing
0, 10p 209 30, 40p 50 and 60% CRS (in CNIOD blend)
war*
assessed by a smoking panel. The first test using
untreated CRS has been completed. The panel's
ability
to distinguish stem-free cigarettes from
cigarettes
containing CRS showed only random variation as the
CRS
content was increased, and the test will have to
be
repeated."
2. The Taste & Flavour Working Party have evolved
a method
for describing the strength of cigarette smoke In
te
of 'impact' and 'irritation' in the mouth, throat,
lungs
and nose. In a series of tests, In which the seven
members took partl. it was discovered that each
individual
could give consistent results, but that there was
little
agreement between members. There have even been
instances
of members reporting opposite reactions. (The
cigarettes
used In these tests were single grades of
flue-cured tips
and cutters, Players and Senior Service.
They believe that the individual consistency Is a
fundamental
findingg and for statistical reasons have wanted
to test the method
on a larger population. It was suggested that an
examination was
made of CHS vs. lamina.
The present test Involves fifty-three smokers and
three types of
cigarette are being used.
(1) 100% CN100 lamina
(11) SW CNIOO, lamina + 20% CRS
(111) 80% CNIOD lamina + 20% CRS extracted with
water
The objects ares-
(a) to show that the method gives consistent
individual results.
(b) to test the possibility of matching
individuals to form a Panel.,
C=>
C=>
NJ
~_n
0 N
Xtb.
ON
c0
BATCo document for Province of British Columbia I
I November 1999


-2-
(c)-to,s&xmine the changes in strength L"rted by
CRSp and
CRS which has been extracted with water.
3. The observations of the Taste & Flavour Working
Partyp
regarding individual consistency and the
differonces
betwoon individuals' responsesp may explain the
Sensory
Difference Panel's failure to distinguish
stem-free
cigarettes from cigarettes containing CRS-
c.c. File 68
C-1
C--
N.)
CIN
BATCo document for Province of British Columbia 11
November 1999