The SS600 Laboratory Olfactometer is the world’s most advanced dynamic stationary olfactory laboratory.

Scentroid SS600 is the world’s most advanced stationary, dynamic, and fully automated olfactometer. It is capable of odour measurement and analysis of all international olfactometry standards. To reduce testing time and ensure maximum lab efficiency the SS600 features 6 identical panellist stations for simultaneous odour analysis. Each station is equipped with a Siemens touch screen for flexibility and ease of operation. Three (3) stainless steel sniffing ports at each station allow for true triangular odour analysis.

The Siemens industrial control panel monitors and adjusts test parameters automatically to ensure optimal test conditions. Test results are instantaneously processed and displayed live to the test administrator on the dedicated 8″ touch-screen interface.

SS600 Applications

• Determine odour concentration in OU/m3 as per EN13725 standard
• Conduct hedonic tone assessments of odour emissions
• Conduct panellist training and N-Butanol screening
• Determine odour concentration in accordance with Chinese and Japanese standards (GB/T14675-93)
• Employ Binary, Triangular, Yes/No, and direct presentation methods
• Only olfactometer capable of odour assessment from petrochemical, oil, refineries and agricultural sources due to the unparalleled contamination control technologies employed

Basics of Operation

Deployment only requires connecting the power cord to a standard 120/240 VAC outlet and connecting the pneumatic hose between the air subsystem and the control subsystem.

1. Select the desired test mode
2. Select the panellist from the database or scan their badge bar code
3. Scan the bar code of the sample ID or enter it manually
4. Select start
5. SS600 will automatically go through a comprehensive purging and stabilization routine
6. All panellist data is automatically processed in real-time, and the odour concentration is provided to the administrator at the end of the test

For more information on the SS600 laboratory, olfactometer click here!

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Mixing of odorous gas and odour-neutral air measured by flow rate. The consistent introduction of odour-free or odour-neutral air to a concentrated amount of an odorous gas allows for accurate measurement when determining the severity of the odour’s concentration and intensity.

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European Dynamic olfactometry is described in detail by the standard EN 13725. This standard was last released in 2003 and is currently under review for revision. As of 2020, an updated version is still waiting to be finalized in the UK. Key elements of this standard are the focus on quality criteria for precision and repeatability. The EN13725 tries to link these values to standard values of n-butanol in nitrogen. It is assumed in this standard that whenever a laboratory complies with the overall sensory quality criteria for n-butanol, the quality level is transferable to other, environmental, odours.

The Standard describes the different test modes such as Triangular Forced Choice, Binary Forced Choice, and Yes/No method for determining the true odour concentration of a sample bag.

Testing Requirements

Many aspects of testing are defined including:

• Number of panellists (min. 4)
• Acceptance criteria of each panellist
• Airflow (20 litres per minute) design of the olfactometer, presentation airspeed, minimum dilution, maximum dilution, and maximum step size
• Calculation of individual detection thresholds and overall detection threshold
• Design of the testing room including temperature and humidity
• materials used in the olfactometer

One of the main objectives of the EN13725 standard is inter-laboratory testing and panellist screening.

While the EN13725 does cover sampling, it is generally accepted that sampling techniques require much greater attention in the next revision of the standard. The standard does provide guidance on the type of sample bags (nalophan, Tedlar, PTFE, etc) and on the dilution devices required (stack diluting sampler, flux chamber, static hood, etc).

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