The Dutch standard NTA 9065 on Odour Measurement and Calculation was first published in 2012. Now 11 years later, the updated version of this standard has been published. The text provides requirements and instructions for the standard procedure for conducting odour testing in the Netherlands.

   This standard has been divided into 2 parts: The NTA 9065-1 'Design, execution and reporting of odour studies' and NTA 9065-2 'Sampling and analysis', which is an update of the recently approved EN 13725:2022 with further info for practitioners in the Netherlands.

en17628   The European Standard EN 17628, just published, now defines not just one method but five different methodologies to evaluate fugitive and diffuse emissions of Volatile Organic Compounds (VOCs). Isn't that wonderful? Well, hold your horses because they ain't easy methods!

  EN 17628 deals with Fugitive and diffuse emissions of common concern to industry sectors. This standard defines a series of methodologies to determine diffuse emissions of VOCs into the atmosphere from industrial sources. These methods are Optical Gas Imaging (OGI), Differential Absorption Lidar (DIAL), Solar Occultation Flux (SOF), Tracer Correlation (TC), and Reverse Dispersion Modelling (RDM).

Standard EN 13725:2022   The moment finally arrived and here you have the new EN 13725:2022 finally published. As many of you know, the European standard was published first in 2003. Four years later in 2007 the doc was revisited, and no changes were made. Another four years later in 2011 the working group (WG) dealing with this standard considered that it was time to review the text profoundly and the 20th of November 2012 the first meeting took place.

   After 17 meetings and 9 years, this European standard is finally published and available for everyone. Most of the work carried out has been targeted to address uncertainty, and concepts like the Secondary Odour Reference Mass (SROM) have been introduced in the new text. But this is not the only change, you probably know that many, many other things have been discussed along the years.


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