1 Scope
This International Standard specifies two methods of providing representative samples
of a population of cigarettes manufactured for sale. Different procedures are specified (see Table 1) according to whether sampling is undertaken at the point of sale or at a factory.
-
a) Sampling “at one point in time” provides for appraisal of the chosen properties of
the cigarettes on that occasion. Sampling is carried out within as short a period
as possible.
-
b) Sampling “over a period of time” provides for on-going appraisals. It can be considered
for practical purposes as a series of samples each taken “at one point in time”.
Table 1
—
Sampling possibilities
| Sampling procedures |
Sampling mode |
At one time
(instantaneous) |
Over a period
(continuous) |
| A |
At point of sale |
Subclause 4.1
|
a
|
| B |
At a factory
|
Subclause 4.2
|
Clause 5
|
This International Standard provides information on the statistical basis for the
treatment of data and gives estimates, based on practical experience, of the typical
confidence intervals for nicotine-free dry particulate matter (NFDPM), nicotine and
CO yields which may be found when a product is sampled in accordance with this International
Standard and smoked in accordance with the procedures specified in ISO 3308, ISO 3402, ISO 4387, ISO 8454, ISO 10315, ISO 10362‑1 and ISO 10362‑2.