Global Recycled Standard (GRS) Test Methods and Acceptable Limits
Global Recycled Standard (GRS) is verified through Textile Exchange scheme. Knowing how the method works avoids rejecting fabric that actually meets the requirement.
Method overview
Textile Exchange scheme defines sample size, conditioning and calculation, so values are comparable only within the same revision. Working figures for Global Recycled Standard (GRS) normally sit around requires transaction certificates in mainstream production. Note Textile Exchange scheme on the tech pack so nobody tests against an older revision.
Result interpretation
Read the value together with construction notes; requires transaction certificates is only meaningful for similar fabrics. Record elastane content alongside Global Recycled Standard (GRS), because blends shift the measured value. A result outside requires transaction certificates usually points to process drift rather than to the fibre itself.
Typical limits
Buyers commonly write requires transaction certificates with a stated tolerance, then verify against Textile Exchange scheme. Keeping reference values for Global Recycled Standard (GRS) lets suppliers quote without extra sampling rounds. Ask for conditioning details together with Textile Exchange scheme, since both affect the reading.
Sources of variation
Conditioning time, operator technique and shade all influence the result. Working figures for Global Recycled Standard (GRS) normally sit around requires transaction certificates in mainstream production. Note Textile Exchange scheme on the tech pack so nobody tests against an older revision.
Documentation
Record the standard revision on every report, because older versions can differ from current practice. Record elastane content alongside Global Recycled Standard (GRS), because blends shift the measured value. A result outside requires transaction certificates usually points to process drift rather than to the fibre itself.
