BS ISO 20774:2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Reagents
7 Sampling and preparation of cigarettes
8 Preparation for the smoking run
9 Procedure for smoking run and collection of
   sidestream smoke
10 Determination of carbon monoxide
11 Summary of other test sample calculations
12 Test report
13 Repeatability and reproducibility
Annex A (informative) - Smoking plans
Annex B (informative) - Alternative procedure for CO
        calibration
Bibliography

Pertains to the determination of carbon monoxide present in the sidestream smoke from cigarettes.

This International Standard is applicable to the determination of carbon monoxide present in the sidestream smoke from cigarettes. The described method is specified using the ISO3308 smoking parameters (puff volume, duration and frequency) and butt length, but it is technically compatible with other smoking regimes.

NOTE The method may not be directly adaptable to other sidestream smoke analytes. Nevertheless the determination of carbon dioxide was part of the validation study of ISO20774 carried out by CORESTA. According to the number of reporting laboratories no rigorous statistical analysis of sidestream carbon dioxide data was carried out. Therefore only indicative information about conditions for the determination of CO₂ is provided.