3rd Proficiency Test (2017) on Diffusion Capacity of Cigarette Papers
PTM Technical Report
This proficiency test was the third one carried out to assess the capability of the participating laboratories to measure diffusion capacity using the CORESTA Recommended Method (CRM) No. 77 as a general guideline.
The results from this study serve as a check that laboratory procedures and their development over time did not lead to a substantial increase in between-laboratory variability and it further offers each laboratory the possibility of assessing its performance in comparison with other laboratories and to derive actions for improvement.
Compared with past studies, the between-laboratory variability did not change substantially when measuring the diffusion capacity of typical LIP bands on cigarette paper. It has however increased when measuring the diffusion capacity of the cigarette paper (i.e. outside of the LIP bands). This requires more investigation, which will be done during the revision of CRM No. 77 in 2019.
CRM 77 - Determination of Diffusion Capacity by Measurement of CO2 Transfer Rate Through Materials Used as Cigarette Papers and Cigarette Papers having an Oriented Zone of Reduced Diffusion Capacity (June 2019)
CRM 40 - Determination of Air Permeability of Materials used as Cigarette Papers, Filter Plug Wrap and Filter Joining Paper including Materials having an Oriented Permeable Zone (October 1994)
Report - 2015 Proficiency Test Report - The Measurement of Diffusion Capacity of Cigarette Papers (September 2015)
Report - Collaborative Study to Evaluate a Paperboard Substitute for a Diffusion Capacity Standard (August 2015)
Report - 2014 Proficiency Test Report - The Measurement of Diffusion Capacity of Cigarette Papers (July 2015)
Report - 2014 Collaborative Study for the Determination of Repeatability and Reproducibility of CRM 77 (June 2015)
Guide 14 - A User Guide for the Determination of the Diffusion Capacity (D*) of Cigarette Papers (June 2019)