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Category: Odour Measurement

Trained panellist carrying out a hedonic tone odour assessment using a sniffing port.

Hedonic Tone Odour Assessments – Measuring Pleasant & Unpleasant Odours

Hedonic tone odour assessments measure how pleasant or unpleasant an odour is perceived to be. Learn how the hedonic tone scale helps organisations understand odour perception and potential community impact.

Silsoe Odours conduct biofilter odour sampling using the sheet cover method.

Biofilter Odour Sampling: The Role of the Sheet Cover Method

Biofilter odour sampling helps assess the performance of biofilters used to treat industrial emissions. Learn how the sheet cover method enables representative odour sampling from large surface areas and supports compliance with EN 13725:2022.

Odour consultants collecting odour samples from an industrial stack sampling port.

Stack Sampling for Odour Emissions

Stack sampling measures odour emissions directly from stacks, flues and vents. It provides reliable data for compliance, planning and odour assessment.

What Is A Sniff Survey? | Odour Assessment Explained

A sniff survey is a structured field method used to assess odour impact in real-world conditions by measuring how odours are experienced off-site.

Silsoe Odours collecting an odour sample from an industrial process using sampling equipment.

Odour Sampling Methods: Techniques for Accurate Measurement

A practical guide to odour sampling methods, explaining how emissions are collected from different sources, including ducts, stacks, biofilters and site boundaries, and how to select the right approach for each assessment.

Odour Panel member assesses an odour as part of her odour characterisation training at Silsoe Odours.

Odour Characterisation: Building Consistency in Odour Description

Odour characterisation training ensures consistent and repeatable odour descriptions across laboratory and field assessments. This improves the reliability of odour interpretation and supports more robust assessment and complaint evaluation.

Odour panel member conducting UKAS-accredited olfactometry testing in the Silsoe Odours laboratory

What is Olfactometry? | Measuring Odour Concentration Under BS EN 13725

Olfactometry is the standard laboratory method used to measure odour concentration and intensity in air samples. This guide explains how dynamic olfactometry works under BS EN 13725:2022, including UKAS-accredited odour sampling and analysis.

Laboratory technician handling odour sampling bags in the pre-lab area of Silsoe Odours' UKAS-accredited odour testing laboratory

UKAS-Accredited Odour Testing Laboratory & Sampling Services

UKAS-accredited odour testing laboratory providing sampling and analysis services to support planning, permitting and environmental compliance.

Sniffing ports used in dynamic olfactometry at the Silsoe Odours UKAS-accredited odour laboratory, supporting BS EN 13725 compliant odour measurement.

Proficiency Testing in UKAS-Accredited Odour Laboratories

UKAS accreditation and independent proficiency testing ensure reliable odour measurement. Discover the role of BS EN 13725:2022 and olfactometry in delivering consistent, defensible laboratory results for regulatory and technical decision-making.

Odour Panel Members are crucial to the odour testing process

An Overview of Odour Testing

Learn how Silsoe Odours tests and analyses odours using UKAS-accredited methods. Understand the process of odour testing, including odour panels and how results remain objective.