A reliable measurement starts with a good measurement plan. The plan outlines the measurement strategy, locations, frequency, methods and relevant parameters (and may involve a site visit). 

We adapt the measurement plan to the specific situation and the objective of the study. This process includes an analysis of the emission(s) to be measured, the available measurement points, process conditions and the desired quality of the measurement results. 

A good measurement plan ensures that the measurements are carried out in a targeted, reproducible and efficient manner and that the results actually answer the research question. 

From a one-off emission measurement to an extensive measurement programme, we help you determine the right measurement plan from the start. 

In our Odour Lab, we analyse the odour samples collected by our measurement team. We do so by diluting the sampled air in an olfactometer (a dilution device) and presenting it to an odour panel.  
 
We offer various sensory analysis techniques and associated services, for example for measurement agencies without their own lab: 

• Determination of the odour concentration (ou_E/m³) in accordance with NEN-EN 13725:2003;
• determination of the (un)pleasantness or hedonistic value of odours in accordance with NEN2818: 2019/2005;
• determination of the odour threshold value of pure aromas or aroma mixtures;
• certification of the olfactory sensitivity of persons (for example employees who carry out complaint verification and/or enforcement) in accordance with NEN-EN 13725.

Based on our measurements and analyses, we use model simulations to assess the impact of emissions on the living environment. We combine measurement results with relevant process and area data, such as emission duration, frequency and meteorological conditions. This results in an evidence-based assessment of the spread and potential (current and future) impact of emissions on the environment.

Model simulations allow us to visualise the spread of substances and odour. The results show where emissions end up in the environment and the potential concentrations of odour exposure, which presents a clear picture of the current situation and the effects of future developments or measures. 

We advise companies on emission reduction measures. We identify the Best Available Techniques (BATs) and assess which measures are most suitable for the client’s specific situation. This involves considering not just the objective, but also the technical feasibility and cost effectiveness. 

From odour to hydrocarbons, SVHCs, NH₃ and other emissions, we can compare various techniques and measures. Potential solutions include air filters, air scrubbers and other end-of-pipe techniques. 

Because we are not dependent on specific technologies or suppliers, we can issue objective, tailor-made recommendations to suit specific processes, emissions and ambitions.

The Odour Lab is part of the Witteveen+Bos knowledge network. This means that we can combine our odour expertise with other knowledge domains, such as policy and regulations, permit processes and process technology.