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One week left for the EN 16841 to be implemented at national level by publication of an identical national standard or by endorsement. Just seven days to start working with this new European Standard that describes two methods for direct assessment of odours in ambient air: The grid method and the plume method.
The dynamic olfactometry method described in EN 13725 is generally only suitable for measurement of odour emissions at the source, as the practical lower detection limit is typically ≥10 ouE/m3 (according to the Final draft of the EN 16841). Dynamic Olfactometry should not be applied directly to determine odour exposure in the field, although some authors claim that this is possible.
The definitive text of the Standard EN 16841 is finally available in the official language versions (English, French and German) and it has been distributed to the CEN/CENELEC members. That means that although it might take a while for the EN standard to be available for purchase in any CEN member website, the process has already started. 
In 2014 the residents of Kelsterbach suffered from an extreme annoyance due to odour impact in the residential areas. The nearby located WTP of the Stadtentwässerung Frankfurt was considered to be the source for the occurring odours.