Background

In 1998, John Jiang initiated the development of the fourth generation olfactometer at the University of NSW (UNSW). In November 2000, the prototype (Wang olfactometer) was commissioned to replace the Olfaktomat olfactometer (1990 - 2000, PRA, the Netherlands, now OdourNet). By the end of 2002, the Wang Olfactometer had successfully operated and tested more than five hundred odour samples.

Wang olfactometer at UNSW

After the UNSW decided not to commercialise the olfactometer, John Jiang took the initiative to market the olfactometer through his own independent company. Environodour was conceived and the DynaScent olfactometer was commercially released in early 2003. The redesigned version has many new features to increase functionality and create more accurate results. It's ability to create Odour Concentration Intensity (OCI) Relationships is a feature unrivalled by its competitors. The most significant feature is the automatic calibration of the olfactometer using the mass flow. This enables the dilution ratios to be checked against primary flow calibration standards (soap bubble meter). This avoids the need for expensive and labour consuming tracer gas calibration.

EnvironOdour has now commissioned the second revision of the original design, named the DynaScent II. The DynaScent II was officially marketed in mid-2005, and incorporates many design modifications that vastly improve upon the previous models. Most remarkably, ambient odour intensity can now be tested without the need for dilution while still maintaining the complete decontamination of the machine. The sniffing cups and testing drum have been modified to further aid in odour detection. The touch screen is now available in both colour and black and white models, and the operational software has been further simplified for ease of use. The internal mechanics have been improved to increase the stability of the dilution ratio.

EnvironOdour are currently in the early stages of developing a more portable DynaScent version. It will be light weight and easy to handle, while still meeting all requirements set out in the relevant standards. The portable DynaScent is planned for release in mid 2006.