Scentroid SM100 Field Olfactometer
| Brand | IDES |
|---|---|
| Origin | Canada |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | SM100 |
| Pricing | Available Upon Request |
Overview
The Scentroid SM100 Field Olfactometer is the world’s first portable, on-site olfactometric instrument engineered to quantify odor concentration in ambient air according to internationally recognized dynamic dilution principles. Unlike subjective odor assessment methods, the SM100 implements a standardized, human-panel–based measurement protocol grounded in the fundamental psychophysical principle of odor threshold detection. It operates via a Venturi vacuum pump system that draws ambient air samples while simultaneously introducing precisely metered volumes of odor-free compressed air—sourced from certified zero-air cylinders—to achieve controlled, stepwise dilution. The operator adjusts a calibrated dilution valve until the odor reaches the recognition threshold (i.e., the lowest concentration at which ≥50% of trained panelists detect the presence of an odor), thereby determining odor concentration in European Odour Units per cubic meter (OUE/m³). Designed for real-time field deployment, the SM100 bridges the gap between laboratory-grade olfactometry and operational environmental compliance monitoring.
Key Features
- True field-deployable olfactometer with integrated Venturi sampling pump and precision dilution control valve
- Dilution range spanning 2× to 30,000×, enabling quantification across low- to high-intensity odor emissions
- Compliance with EN 13725:2003 and ASTM E679–04 (2011) standards for odor threshold determination and olfactometer performance validation
- Dedicated Teflon-coated face mask and portable zero-air cylinder interface to maintain nasal sensitivity under variable ambient conditions
- Real-time dilution ratio readout via mechanical valve position indicator—no software dependency for primary operation
- Ruggedized housing rated for outdoor use in industrial, landfill, wastewater treatment, and agricultural settings
Sample Compatibility & Compliance
The SM100 supports direct olfactometric analysis of undiluted ambient air, stack effluents (via probe coupling), flux chamber outflows, and pre-collected bagged samples (e.g., Tedlar® or Nalophan®). Its design conforms to regulatory frameworks requiring odor impact assessment under ISO 16000-28 (indoor air), provincial odor management guidelines (e.g., Ontario Regulation 419/05), and EU Industrial Emissions Directive (IED) Annex VII reporting requirements. All dilution air meets ISO 8573-1 Class 1 purity specifications (oil-free, hydrocarbon-free, <0.01 mg/m³ total volatile organic compounds). Instrument calibration and operator training protocols align with GLP-compliant odor panel management practices, supporting traceable data generation for regulatory submissions and third-party audits.
Software & Data Management
While the SM100 operates independently of software for core dilution-based threshold detection, optional Scentroid Olfaction Manager™ software enables digital logging of test sequences, panelist response records, GPS-tagged sampling locations, and automated OUE/m³ calculations per EN 13725 Annex B. Data exports comply with CSV and XML formats compatible with LIMS integration. Audit trails include timestamped valve position logs, cylinder pressure tracking, and user authentication—supporting FDA 21 CFR Part 11–aligned electronic record integrity where required.
Applications
- Routine odor emission verification at municipal wastewater treatment plants, composting facilities, and anaerobic digesters
- Pre- and post-mitigation odor impact assessments around landfills, rendering plants, and livestock operations
- Source identification and plume characterization during odor complaint investigations
- Validation of biofilter, scrubber, and carbon adsorption system performance
- Field calibration and verification of fixed-site electronic nose systems
- Odor management plan development and regulatory reporting under local air quality ordinances
FAQ
Does the SM100 require certified odor panelists to operate?
No—the instrument itself does not perform sensory evaluation; it provides the calibrated dilution infrastructure for trained human panelists to conduct EN 13725-compliant testing. Panelist qualification remains the responsibility of the testing organization.
Can the SM100 be used indoors or only outdoors?
It is validated for both indoor and outdoor use, provided background air quality permits reliable zero-air reference conditions and sufficient ventilation during sampling.
Is routine calibration required, and what standards are used?
Annual verification against certified reference odorants (e.g., n-butanol in nitrogen per EN 13725 Annex D) is recommended. Flow rates, dilution ratios, and vacuum performance must be documented per internal SOPs aligned with ISO/IEC 17025.
How is nasal fatigue mitigated during extended field sessions?
The system incorporates mandatory zero-air purging cycles between samples, Teflon mask material to minimize off-gassing, and strict adherence to EN 13725-defined rest intervals and maximum exposure durations per panelist.
What maintenance is required for long-term field reliability?
Routine inspection of O-rings, valve seals, and filter elements; periodic replacement of desiccant in air dryers; and verification of cylinder regulator output pressure stability at 200 kPa ±5 kPa.
