Overview
ISO 17299-3:2014 - Textiles - Determination of deodorant property - Part 3: Gas chromatography method specifies a laboratory gas chromatography (GC) procedure to quantify odour-component chemicals in textile deodorant testing. The method targets common odour molecules such as indole, isovaleric acid, 2‑nonenal, and acetic acid (with NaCl) and describes two sample preparation approaches (Method A and Method B). Results are reported as an odour reduction rate (ORR) calculated from GC peak areas.
Key topics and technical requirements
- Scope: GC measurement of gaseous odour components in containers with and without textile specimens to determine deodorant performance.
- Target chemicals: indole, isovaleric acid, 2‑nonenal, acetic acid (with NaCl).
- Two preparation methods:
- Method A - odour chemical applied in the container without direct contact with the specimen (each chemical tested separately); small-volume application (e.g., 5 µl).
- Method B - odour solution injected directly onto the specimen (used for acetic acid + NaCl); larger injection volumes (e.g., 850 µl) and heat incubation.
- Sampling and analysis:
- Headspace sampling with gastight syringes after defined contacting times.
- GC detection using FID (flame ionization detector) or MSD; Annex A gives example GC parameters (capillary DB‑5 column, injector temp ~250 °C, carrier gas).
- Environmental control: conditioning and testing atmosphere per ISO 139 (standard lab temperature and humidity).
- Calculation: ORR (%) = (Sb − Sm) / Sb × 100, where Sb = average GC peak area without specimen (control) and Sm = average peak area with specimen.
Applications and practical value
- Provides a repeatable, quantitative method for evaluating deodorant/anti‑odour treatments on textiles (fabrics, yarns, fibres).
- Useful for quality control, product development, and comparative testing of finishing chemistries and technologies.
- Enables manufacturers, testing laboratories, and research teams to measure reduction of specific odour chemicals rather than relying solely on sensory panels.
- Supports R&D for deodorizing finishes, performance claims, and troubleshooting odour issues in apparel, home textiles, PPE, and technical textiles.
Who would use this standard
- Textile testing laboratories and QC teams
- Textile chemists and R&D scientists developing deodorant finishes
- Third‑party certification bodies and contract testing services
- Manufacturers validating product performance and marketing claims
Related standards
Keywords: ISO 17299-3:2014, deodorant property, textiles, gas chromatography, GC method, odour reduction rate, indole, isovaleric acid, nonenal, acetic acid, deodorant testing, FID, textile testing.