Public awareness of environmental odors has increased with higher living standards among the population. Olfactometry, which is the science of measuring odors, remains today the only method to characterize odors and their effects on human perception. This relatively new science is now regulated by international guidelines available in Europe and North America. These guidelines recommend the use of an olfactometer.

Olfactometry is the science of measuring odors. No instrument has yet been able to reproduce the smell sensation of the human nose, largely because of the synergy exerted among the gases that make up odorous air. Historically, humans have been used to measure odours, with the challenge of eliminating bias in their assessments and obtaining repeatable responses.

The science developed to measure odours consistently and without bias using human panels is therefore called olfactometry. The odour measured through olfactometry is an evaluation of its main character, namely its intensity and its qualitative tone, meaning the elements that allow it to be described.

Clients requiring olfactometric analyses are generally engaged in activities releasing odours into the atmosphere. This includes, for example, livestock farms, food processing plants, pulp and paper mills, chemical manufacturing plants, waste handling and treatment facilities, and much more. Even pleasant odors, such as chocolate, can become bothersome when emitted continuously.

Sampling of the odour source and the determination of its odour unit (required threshold dilution) allows for the analysis of solutions reducing the emission of odours below their threshold.

Odours can be analyzed using several olfactometric methods. With over 25 years of research, experimentation, and innovation in the field, AtmoDC has developed a proven work methodology that delivers consistent, reliable results, along with specialized equipment tailored for this type of analysis.
Among these innovations is the Onose-8® olfactometer, designed by AtmoDC to enable dynamic, accurate, and user-friendly odour analysis. This state-of-the-art instrument is now marketed worldwide.

For any questions or to discuss your needs, our team of olfactometry experts is available at: info@onose.ca.

The analysis of odors has existed for centuries in the world of perfumery. Specialists were, and still are, called upon to evaluate scents: the perfumer, also known as the Nose. This expert was responsible for creating the perfumes and adjusting their formulation when needed. The German author Patrick Süskind drew inspiration from this profession when creating the character of Jean-Baptiste Grenouille in his novel Perfume (also adapted into a film). Reading the book promises colourful smells!