TO8 evolution olfactometer

The TO8 evolution olfactometer combines the latest scientific and technological advances with decades of practical experience – enabling us to set new benchmarks in the field of olfactometry.

The compact size and transportability of this olfactometer model mean you can use it equally as a home-based laboratory, as well as a mobile on-site laboratory to keep sample storage time to a minimum, increase flexibility, and offer quicker reporting.

The TO8 evolution olfactometer allows for easy setup and is simple to maintain. You can be assured of the reliability of our well-known robust equipment, manufactured in-house in Germany. The heart of the TO8 evolution olfactometer is the ultra-modern and purpose-designed dilution system, which is based on the proven principle of combining gas jet pumps and fixed sapphire orifices.

The olfactometer software package provides an olfactometer control software to support your laboratory in delivering odour measurements at the highest quality; as well as a state-of-the-art Laboratory Information Management System (LIMS) which has been specifically designed to meet the needs of odour laboratories.

The new WiNose LIMS supports odour laboratories in fulfilling quality management procedures and in increasing efficiency in day-to-day lab operation by managing equipment, samples, measurement results, and panel data in a central location.

The TO8 evolution olfactometer is available as 4-station or 6-station olfactometer and meets all requirements of EN 13725:2022.

Olfactometer TO8evolution

Supported methods

  • Yes / No (EN 13725)
  • Triangular Forced Choice (ASTM 679)
  • Intensity (VDI 3882 Part1)
  • Hedonic Tone (VDI 3882 Part2)
  • Configurable intensity and hedonic tone scale
  • Triangular odor bag method – GB/T 14675 – 93


  • Available as 4-station or 6-station olfactometer
  • Unique and specially designed dilution system
  • Fully automatic, 100 % compliant with EN 13725:2022
  • Analytical recovery of odorants from 85% up to 99% due to passivated stainless steel
  • Easy to set up and simple to maintain
  • Mobile and plug & play technology
  • Fastest analysing time
  • Integrated heating system and extensive flushing functions to prevent contamination
  • Dedicated laboratory information management system (LIMS) for odour laboratories; fully traceable
  • Ergonomically designed with optimized human-to-machine interface
6 station olfactometer Olfasense

Available as 4-station or 6-station olfactometer

Based on our experience we know that different odour laboratories have different requirements for their olfactometer. Thanks to its modular design, the TO8 evolution is scalable for up to 6 panellist stations. You can decide for yourself which is most suitable for your requirements; whether it’s a 4-station or 6-station olfactometer.

The TO8 evolution is an ergonomically designed olfactometer that focuses on the main sensor in olfactometry: the human nose. Our engineers have collaborated with professional industrial designers to focus on the interaction between man and machine. The height-adjustable nose masks allow the panellists to always sit in the optimal upright position, regardless of how tall they are. The centrally-located touch screen is easily accessible and suitable for both right- and left-handed users.


Technical Data

General Details
Olfasense GmbH, Germany
Dimension (L x W x H) - Weight
4 stations: 615 x 615 x 535 mm – 30 kg

6 stations: 1140 x 615 x 535 mm – 42 kg
Maximum calibration interval
12 months (according to EN 13725)
24 months (warranty extension up to 5 years through service contracts possible)
Technical Specifications
Dilution principle
Gas jet pumps and calibrated precision orifices for sample dosage
Vent for surplus diluted odour
Outlet air via active carbon filter
Number of panel members working simultaneously
4 stations: 2 or 4

6 stations: 2, 4 or 6
Panel interface
Raspberry Pi 7”, capacitive touch, 800 x 480 pixel
Analyses time for one sample (EN 13725)
~ 4 min for 2 analysis runs*
~ 6 min for 3 analysis runs*
(*under ideal conditions)
Required air supply
min. 140 l/min at 6 bar
Dilution range
2² (1:4) - 216 (1:65,536) – yes/no method
2² (1:4) - 216 (1:65,536) - triangular forced-choice method
Interval steps
28 dilution steps - Factor √2 (1.4)
usable also in Factor 2 interval
Dilution accuracy
< 5%
Response / setting time
< 0.1 sec
Analyitcal recovery of odorants
- Dimethyl sulphide
- n-Butanol
- H2S
- Propanoic acid
85% up to 99%

(EN 13725:2022 requires > 70%)
Required sample volume
~ 500 OU/m³ - 1l (yes/no) *
~ 64 OU/m³ - 3l (yes/no) *
< 16 OU/m³ - 10l (yes/no) *

*(estimation with default settings)

WiNose evolution LIMS - Your new odour laboratory management assistant

The TO8 evolution software package provides a dedicated Laboratory Information Management System (LIMS) for odour labs which supports your laboratory in the process of delivering odour measurements of the highest quality.

Quality management and quality control are essential for any olfactometry lab.

The WiNose evolution LIMS supports you in managing and controlling the quality of your measurements by providing many useful laboratory management tools.

From qualifying your panel and keeping track of your lab performance, to managing reference gases, projects, and clients, the WiNose evolution LIMS offers various options to support your day-to-day laboratory processes.

Full traceability of changes made to the LIMS database allows for stress-free audits with accreditation bodies.

Download the brochure below to learn more about the functionalities and benefits of the WiNose evolution LIMS.

Improve your data availability
through web-based access within your network
Improve your data quality
through reduced transcription errors
Save valuable time in lab operation and management
through centralized management and dedicated tools for quality management and reporting
Find data quickly
with our advanced full-text search options
Reduce the effort
of accreditation audit preparation
Increase efficiency
through centralized user access via a web-interface
Olfactometer Software

TO8 evolution control software

The TO8 evolution software package comes also with an olfactometer control software to support your laboratory in delivering odour measurements at the highest quality.

The TO8 evolution control software supports all relevant standards such as EN 13725:2022, AS 4323.1, ASTM 679, VDI 3882 Part 1 & Part 2. With its modern look and feel, and user friendly interface, the TO8 evolution software ensures fast and reliable measurements without overloading the user with operational information. Regardless of the level of experience of your operators, from the novice through to the highly experienced, the TO8 evolution software can give them the guidance and visual assistance that is needed to ensure measurements at the highest quality.

  • Improved usability for operators through a state-of-the-art user interface
  • Extended checkup features and test routines
  • Real-time acquisition of data
  • Integrated WiNose evolution LIMS interface ensures all results are instantly available in the LIMS and accessible to the users
  • Direct transmission of results to the WiNose evolution LIMS reduces the steps in producing documentation and avoids error-prone manual copying & pasting of data
  • Keep the software up to date with the automated update mechanism (requires an active internet connection)

Installation Video

In our installation video, you will learn how easily you can unpack, set up, and put our TO8 / TO9 evolution olfactometers into operation – quickly and all by yourself.

Especially in the current corona pandemic, traveling is difficult and sometimes only possible involving a lot of effort. It is therefore important to us that you can put your new olfactometer into operation without an Olfasense employee on-site.

At the same time, our experts will support you with subsequent training on the olfactometer control software and the WiNose LIMS via TeamViewer and Skype, so you can enjoy a comparable feeling of on-site support.


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