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St. Croix Sensory provides a comprehensive suite of odour sensitivity validation and certification services designed to support EN 13725 compliance, data defensibility, and professional qualification.
Our offerings range from full EN 13725 Odour Sensitivity Certification—featuring multi‑day, structured training and verified butanol threshold documentation—to one‑day Odour Sensitivity Validation sessions and streamlined Quarterly Qualification Visits.
Each service uses calibrated olfactometric methods to confirm assessor sensitivity, consistency, and performance, delivering clear documentation and recognized credentials for regulatory monitoring, laboratory olfactometry, and projects where confidence and scrutiny readiness are critical.
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This program represents the highest level of odour assessor certification and is designed for individuals seeking full compliance with the EN 13725 standard for dynamic olfactometry.
Participants complete a multi-day structured training process focused on precision, consistency, and regulatory defensibility. Training is conducted over three to four sessions, allowing sufficient time for skill development, performance verification, and documentation.

As part of the certification process, participants receive:
Upon successful completion of all training and evaluation requirements, participants are awarded a Certificate of EN 13725 Compliance, formally recognizing their qualification to serve as an odour assessor under the standard.
Odour Sensitivity Certification is ideal for professionals involved in regulatory odour monitoring, laboratory olfactometry, and high‑confidence odour assessment programs where data quality and compliance are critical.
This one‑day session is designed for individuals who need formal confirmation of odour sensitivity in accordance with the EN 13725 standard. The session focuses on assessing and documenting an individual’s olfactory sensitivity using recognized olfactometric procedures.
Participants complete targeted butanol training and evaluation on a calibrated olfactometer, allowing precise measurement of odour detection thresholds under controlled conditions. Performance is evaluated against EN 13725 criteria to confirm acceptable sensitivity and consistency.
Upon successful completion, participants receive a Certificate of Odour Sensitivity Validation confirming their olfactory sensitivity was evaluated in accordance with EN 13725
Odor Sensitivity Validation is well-suited for:
This option provides a focused one‑day qualification visit for individuals who require a streamlined assessment of odour sensitivity based on EN 13725 principles.
During the visit, participants complete 3–4 butanol odour threshold evaluations using a calibrated olfactometer. These controlled assessments are designed to confirm olfactory performance within an acceptable sensitivity range and to establish baseline qualification data.
Odour Sensitivity Qualification visit are well suited for:
The one‑day format offers an efficient, professional evaluation while maintaining alignment with recognized EN 13725 methodology.
Ideal for individuals looking to maintain EN13725 certification.
The conversation about air quality in Spain has taken an unexpected and refreshingly human turn. Instead of focusing solely on regulatory limits and mathematical dispersion models, Spain is increasingly asking a simpler question: What does the air actually smell like where people live?
We’re proud to share that St. Croix Sensory, a global leader in odor assessment services, was recently featured in an article by the Toronto Star. The coverage highlights the critical role our trained odor assessors play in providing objective odor evaluations for communities, regulators, and industries.
St. Croix Sensory President Mike McGinley was recently featured at TEDx Oshkosh.