ANNEX Methodology - Spinning Greenwash.docx

The methodology employs two internationally recognised testing systems—the GyroWash (ISO 105-C06) and the Wascator (ISO 6330)—to measure microfibre shedding from 51 garments made of cotton, polyester, recycled polyester, polyamide, and recycled polyamide. The GyroWash uses standardised 4 x 10 cm fabric samples to provide precise fibre counts and length measurements, while the Wascator simulates full-garment domestic laundering to determine total shed mass. To ensure consistency, both systems used identical temperature (40 °C ± 2 °C), duration (30 minutes), and mechanical action without detergents. The study included blank controls and specific sample preparation, such as sealing cut edges with adhesive, to prevent contamination and ensure that fibre release resulted solely from mechanical and thermal stresses.

• The study utilised two distinct testing systems to capture different dimensions of microfibre shedding: the GyroWash for quantifying the number and size of fibres from standardised samples, and the Wascator for determining the total mass of fibres released from whole garments.
• Testing was conducted on 51 garments composed of cotton, polyester, recycled polyester, polyamide, and recycled polyamide. While 40 garments underwent both GyroWash and Wascator tests, 11 garments with printed areas or structural variations were tested only in the Wascator to account for material heterogeneity.
• The experimental parameters were standardised across both systems to represent mild domestic laundering, specifically using a temperature of 40 °C ± 2 °C for 30 minutes without the use of detergents or auxiliary chemicals.

APA

Changing Markets Foundation (n.d.). ANNEX Methodology - Spinning Greenwash.docx. https://changingmarkets.org/wp-content/uploads/2025/12/Methodology.pdf

Chicago

Changing Markets Foundation. ANNEX Methodology - Spinning Greenwash.docx. n.d. https://changingmarkets.org/wp-content/uploads/2025/12/Methodology.pdf.

Wikipedia

{{cite report |author=Changing Markets Foundation |title=ANNEX Methodology - Spinning Greenwash.docx |url=https://changingmarkets.org/wp-content/uploads/2025/12/Methodology.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{changingmarketsfoundationndannex, author = {{Changing Markets Foundation}}, title = {{ANNEX Methodology - Spinning Greenwash.docx}}, institution = {Changing Markets Foundation}, url = {https://changingmarkets.org/wp-content/uploads/2025/12/Methodology.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }