Australia has recently adopted the EN 13725:2022 standard for odour measurement, aligning its methodology with the latest European standard. The new AS EN 13725:2025 replaces the older AS/NZS 4323.3:2001, which was based on the 2003 European standard. The change introduces updates in calibration, uncertainty assessment, and sampling procedures.

   For those involved in environmental monitoring and odour assessment, understanding this update is important. The adoption of a transposed standard means that Australia now uses the same methodology as Europe, ensuring consistency in measurements.

   Working Group 41 of CEN convened in Paris (and online) on 16 June this year, with the main focus on resolving comments made to the drafts of Part 1 and Part 2 of the standard for Instrumental Odour Monitoring Systems (IOMS). Part 1 will deal with definitions and general aspects, Part 2 will address technical specifications and QA/QC requirements, and Part 3 will cover field validation. This is the second attempt by Working Group 41, following an earlier effort that was not successful.

   A week ago, the WG41 group gathered in Paris to discuss the progress of the two drafts currently in development. The group has been working for over three years on the first CEN standard for Instrumental Odour Monitoring Systems. On this occasion, the group reviewed around 150 comments, with over 110 coming from the Spanish mirror group.