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WP.29 Rulemaking Project
Particle Measurement Programme

The Particle Measurement Programme (PMP) was established to improve the sensitivity of the Particulate Matter (PM) mass measurement system for heavy and light duty vehicle emissions. PMP developed a particle number (PN) counting method for ultrafine solid particles and enhancements to the PM measurement procedure that were incorporated into UN R83 and R49.
Since 2013, PMP has focused on PN as a function of particle size (mainly on the difference between the number of particles measured with the existing PMP methodology (d50=23 nm) and with systems with lower d50s, investigating the possibility to modify the existing d50 methodology from 23 to about 10 nm.

Related News and Information

10 Feb 2017 10 Feb 2017 | Are diesels slipping back? The Particle Measurement Programme (PMP) was established to improve the sensitivity of the Particulate Matter (PM) mass measurement system for heavy and light duty vehicle emissions. PMP developed a particle number (PN) counting method for ultrafine solid particles and enhancements to the PM measurement procedure that were incorporated into UN R83 and R49. Since 2013, PMP has focused on PN as a function of particle size (mainly on the difference between the number of particles measured with the existing PMP methodology (d50=23 nm) and with systems with lower d50s, investigating the possibility to modify the existing d50 methodology from 23 to about 10 nm. PMP Particle Measurement Programme WP.29 Regulatory Project Particle Measurement Programme and Uniform provisions concerning the measures to be taken against the emission of gaseous and particulate pollutants from compression-ignition engines and positive ignition engines for use in vehicles Diesel/CNG/LNG Engine Emissions Diesel and CNG/LNG Engine Emissions UN Regulation No. 49 UN R49
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Development of the Initiative

Pending Changes to Particle Measurement Programme

Latest Documents

20 Feb 2020
Notes from the 52nd PMP informal group session | PMP-52-02
10 Feb 2020
Follow-up research into the PN limit value and the measurement method for checking particulate filters with a particle number counter | PTI-17-05
10 Feb 2020
PTI: Particle Number Counter- Metrological controls and performance tests | PTI-17-04
See all 219 related documents

Latest Meeting Discussions

Working Party on Pollution and Energy | Session 81 | 9-12 Jun 2020
Working Party on Pollution and Energy | Session 80 | 14-17 Jan 2020
Informal Group for the Particle Measurement Programme | Session 52 | 13 Jan 2020
See more related meetings