Conventional textile testing has been missing a large proportion of microfibre pollution released during washing and wear, with the smallest and most irregularly shaped fragments escaping detection entirely. A fluorescence-based method developed in new research dramatically improves microfibre identification, exposing a far greater scale of textile pollution than standard methods have previously captured.
- The technique applies fluorescent disperse dye to polyester textiles before washing, then uses semiautomated microscopy and fibre counting software to render even the tiniest fragments clearly visible.
- Detected microfibre counts reached up to approximately 280% more than those recorded by standard analysis methods previously used in routine textile testing.
- Fibres shed from fabrics during use enter water, air and soil, with the smallest and most irregular fragments most likely to persist in the environment and enter living organisms.
- The findings appear in 'Harnessing fluorescence for advanced characterization of textile microfibre emissions', published in Scientific Reports by researchers at the University of Manchester.
HOW IT WORKS: The research was conducted in collaboration with the University of East Anglia and Manchester Metropolitan University, bridging fashion technology and environmental science. The method adapts industrial dyeing techniques already used in textile manufacturing, combining them with established microplastic analysis methods to overcome longstanding barriers to accurate and consistent routine microfibre monitoring. The work was carried out by researchers including Dr Elisabeth Allen, Dame Kathleen Ollerenshaw Fellow in Fashion Business Technology.
- The result is a faster, more reliable way to measure microfibre emissions under real-world conditions, including mechanical stress and the repeated wash cycles that reflect everyday garment use.
- By combining fluorescence with semiautomated microscopy and fibre counting software, the method makes even irregularly shaped fragments visible that standard approaches have consistently failed to detect.
- Collaborators brought expertise across environmental science and textile technology, enabling a more rigorous and reliable framework for measuring microfibre emissions.
- Existing monitoring methods were found to be time consuming, prone to bias, and vulnerable to contamination, underlining the need for the improved approach the study developed.
PUTTING IT TO WORK: The researchers identified several confirmed applications for the fluorescence-based method beyond the study itself. These include supporting better eco-design of textiles, improving industry testing standards, and informing future regulation. The method may also guide development of fibre-capture technologies, with washing machine filters cited as a specific area where more reliable emissions data could drive meaningful progress.
- The method could inform policies such as extended producer responsibility, placing greater accountability on textile manufacturers for the pollution their products generate.
- Routine monitoring of fibre release is considered essential for designing more sustainable textiles and informing policies aimed at reducing pollution at source, both goals the new method directly supports.
- The method's compatibility with existing industrial dyeing infrastructure lowers the barrier to adoption, making accurate emissions measurement more accessible to manufacturers and testing laboratories across the sector.
- Technologies designed to capture fibres at source, such as washing machine filters, stand to benefit from emissions data that accurately reflects the full range of fragment sizes released during use.
WHAT THEY SAID:
This work highlights the complexities of routine analysis of microfibre pollution, and the work that needs to be done to enable greater monitoring. This work also highlights the missed pollution that could have the greatest effects on the environment and ourselves... If we want to reduce microfibre pollution, we need reliable ways to measure it. This approach opens the door to routine testing that reflects what's really being released into the environment—not just what's easiest to see.
— Dr Elisabeth Allen
Dame Kathleen Ollerenshaw Fellow in Fashion Business Technology
University of Manchester
