Proficiency testing as the key element in implementing EN13275 olfactometry.

The technical standard for dynamic olfactometry EN13725:2003 is now widely applied in testing of odours for environmental management purposes. Many laboratories working in this field apply QA/QC systems according to ISO17025 and are accredited under international accreditation, e.g.

Odour management tools--filling the gaps.

In many countries the approach to odour management and regulation is increasingly based on quantitative techniques and criteria for acceptable exposure to odours in the living environment. A range of tools exists for implementing this approach, from emission measurement to assessment of effects. Some of these tools are well developed and validated, such as the use of olfactometry in laboratories operating according to international standards (EN13725:2003) and applying quality control and assessment systems under strict supervision by accreditation bodies.

Odor concentration decay and stability in gas sampling bags.

This paper presents results of an experimental study into factors contributing to decay of odor samples during storage, between 4 and 40 hr after sample collection. The odor studied was sampled from a tobacco processing plant as part of collaborative research with a view to establishing a manual outlining methods for odor annoyance management, specifically for the tobacco industry. In August and September 1997, an experimental program was carried out in which two types of tobacco odor were sampled: Burley Toaster and Mix.

From odorant formation to odour nuisance: new definitions for discussing a complex process.

The process leading from odorant formation to individuals filing a complaint is complex, involving many steps and factors. A flow chart is proposed. The definitions that describe elements of this process, such as annoyance, nuisance, propensity of a population to experience nuisance, the "unpleasantness" of an odour, as used in odour literature, are often imprecise and confusing.