Hedonic tone Alternative husbandry methods are playing an increasingly important role in terms of animal welfare. In order to ensure that odour pollution from freely ventilated "animal welfare-friendly" fattening pig houses can be adequately taken into account in odour surveys for approval procedures in Germany, the odour annoyance and respectively the hedonic odour effect was investigated in more detail starting from these types of houses.

   The odour annoyance potential of three alternative fattening pig houses was investigated by creating polarity profiles according to guideline VDI 3940 part 4. It was found, that the annoyance potential of those alternative housing forms with natural ventilation and outdoor area as outdoor climate stimulus, as well as bedding (straw), is lower compared to conventional housing forms.

PT EN13725   The company Olfasense has opened the registration for the annual Proficiency Test for Olfactometry based on EN 13725:2003. Laboratories around the world are invited to participate in this edition to confirm compliance to the performance criteria of EN 13725:2003.

   The measurements for the proficiency test will be carried out between August 29th and September 9th, 2022, inclusive. If your lab is interested in participating in this interlaboratory proficiency test, you are encouraged to confirm your participation by May 27th, 2022, at the latest.

42 003   On the 20th of November 2012 the first meeting took place of Working Group 2, tasked by CEN/TC274 “Air Quality” to revise EN 13725:2003 ‘Air Quality - Determination of odour concentration by dynamic olfactometry’.

   After 8 years of work and 17 meetings, the final draft of the revised standard is finally completed and submitted on May 31st 2021 for formal vote in the CEN Technical Committee 264 “Air Quality” in 2021. This paper lists the changes that will affect the practice of olfactometry in Europe, once this standard is published as EN 13725:2021.

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