bags odour degradationDegradation is inherent part of odour sampling and olfactometery analysis. There are many techniques that can be deployed in order to minimize sample degradation, such as nitrogen-based pre-dilution and sealed transportation vessels. Despite the best efforts to keep the volatilization at bay - sample degradation has forced European and American standards to implement a thirty (30) hour expiration on all odour samples. German standard VDI3880, and possible the soon to be revised EN13725 standard, limit sample storage to 6 hours unless it can be shown that the sample degradation is within acceptable limit.

Ardevan Bakhtari 1



 The acronym Omniscientis stands for Odour MoNitoring and Information System based on CItizEn and Technology Innovative Sensors. Appart from being a rather complicated way of naming a project, what is there behind this EU funded project?

   This project is coordinated by the Belgian company Spacebel S.A and counts on partners from Belgium, Austria, Luxembourg and France. The idea behind this project is to improve the performance of an Environmental Information Management System, using direct observations from citizens, real time measurement of odours near the sources with sensors, process parameters and modelling odour dispersion.

SM100SM100 operatorScentroid SM100 is an in-field odour-measuring device that, according to the manufacturer, allows users to accurately quantify ambient odour strength. This device offers an easy-to-use and cost effective alternative to guessing at odour strength or using expensive odour measuring laboratories.

The SM100 draws a sample of ambient air via venture pump and dilutes it using fresh odourless air from a compressed air tank. Operator uses an adjustable sliding valve to control the ratio of fresh to ambient air.

More Articles …

All the content here under Creative Commons license