BS ISO 8243:2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Sampling mode: At one time
5 Sampling mode: Over a period of time
6 Statistical evaluation and reporting
7 Sampling report
Annex A (informative) - Flow chart illustration of the
        sampling in Clauses 4 and 5
Annex B (informative) - Sources of variability concerning
        the choice of sampling procedures
Bibliography

Describes two methods of providing representative samples of a population of cigarettes manufactured for sale.

This International Standard specifies two methods of providing representative samples of a population of cigarettes manufactured for sale. Different procedures are specified (see Table1) according to whether sampling is undertaken at the point of sale or at a factory. 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. 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”. Table1Sampling 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 Clause5 a Procedure A over a period of time is possible but is not specified in this International Standard. 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 ISO3308, ISO3402, ISO4387, ISO8454, ISO10315, ISO10362-1 and ISO10362-2.