Fifteen years of experience in dynamic olfactometry, condensed into one instrument.
The only R&D center in Italy dedicated to air quality and specialized in olfactometry, capable of designing and manufacturing dedicated instrumentation.
LEO is designed to operate both in a fixed laboratory and in a mobile laboratory.
Bringing the instrument directly on site eliminates artefacts related to sample storage, reduces analysis time, and ensures data that is more representative of the actual odour source.
LEO’s dilution system is designed in-house and represents the instrument’s main distinctive technical feature. It offers 29 dilution steps with a √2 factor, software-selectable, providing a concentration range wider than other yes/no olfactometers. The analytical recovery of odorants ranges between 92% and 99% — well above the 70% required by the UNI EN 13725:2022 standard. Dilution accuracy is below 5%.
The dedicated software supports the laboratory from session setup through report generation. It ensures full traceability, real-time visualization, and full GDPR compliance.
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LEO supports up to 4 simultaneous panel stations. The nasal masks are height-adjustable to ensure the optimal position for each operator. The response button is separate from the main body of the instrument and suitable for both right- and left-handed users, reducing distractions during analysis.
LEO meets all the requirements of the UNI EN 13725:2022 standard. It is a Made in Italy product with CE marking, fully developed and assembled by ARCo SolutionS s.r.l. The standard warranty is 24 months, extendable up to 5 years through service contracts.
ARCo SolutionS provides rapid technical assistance throughout Italy. A replacement unit is available to avoid laboratory downtime during calibration and maintenance. The team is available for consultancy in preparing for accreditation audits.
Control Software is developed exclusively for the LEO olfactometer and supports the laboratory through every stage of the work: from setting up the measurement session to quality management and final report production. The interface is designed to minimize operational errors and maximize analytical efficiency.
The software ensures full traceability of all changes made to the database. Data is always available and easy to retrieve, making accreditation audit preparation simple and stress-free.
During each analysis session, the software displays measurements in real time. Accuracy and repeatability parameters are automatically recalculated, both for the individual panellist and for the laboratory as a whole, providing constant control over analytical performance.
LEO Control Software is developed in compliance with GDPR Regulation 2016/679. User documentation and management manuals are written in Italian.
| General Details | |
|---|---|
| Producer | ARCo SolutionS s.r.l. |
| Weight | 35 kg |
| Dimensions (main body) | 45 cm × 45 cm × 50 cm (L × W × H) |
| Dimensions (body + separators) | 106 cm × 106 cm × 50 cm (L × W × H) |
| Time of Administration | By Software |
| PC Interface | USB |
| Air Speed to the Panel | From 0.2 to 0.5 m/sec |
| Response Time | < 1 sec |
| Power Consumption | Max 120 Watt |
| Maximum Calibration Interval | 12 months (according to EN 13725) |
| Warranty | 24 months |
| Technical Specifications | Uniqueness | |
|---|---|---|
| Number of Panel Members Working Concurrently | 4 positions: 1 or 2 or 3 or 4 | A |
| Panel Interface | LED – Ergonomic Button | B |
| Time for Analysis of a Sample (EN 13725) |
~ 4 min for 2 rounds* ~ 6 min for 3 rounds* |
|
| Dilution Range (Yes/No Method) | √25 (1:5.6) – √233 (1:92,682) | C |
| Minimum Air Supply Required | 50 l/min at 4 bar | D |
| Dilution Steps |
29 dilution steps – Factor √2 (1.4) 14 dilution steps – Factor 2 |
E |
| Dilution Precision | < 5% | |
|
Analytical Recovery of Odorants – Dimethyl Sulphide – n-Butanol – H2S – Propanoic Acid |
>92% (EN 13725:2022 requires > 70%) |
F |
A: Useful for testing, trials and panel selection.
B: Improved comfort for panel members.
C: Wider dilution range using the yes/no method.
D: Reduced compressor size and requirements. A portable compressor can be used.
E: Higher number of dilution steps when using the yes/no method.
F: High analytical recovery.
* Under ideal conditions.