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".
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 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.