PFAS Restrictions Test Methods and Acceptable Limits
PFAS Restrictions is verified through EN 17681 tests after degradation. Knowing how the method works avoids rejecting fabric that actually meets the requirement.
Method overview
EN 17681 tests after degradation defines sample size, conditioning and calculation, so values are comparable only within the same revision. Working figures for PFAS Restrictions normally sit around moving to non-detect targets in mainstream production. Note EN 17681 tests after degradation on the tech pack so nobody tests against an older revision.
Result interpretation
Read the value together with construction notes; moving to non-detect targets is only meaningful for similar fabrics. Record elastane content alongside PFAS Restrictions, because blends shift the measured value. A result outside moving to non-detect targets usually points to process drift rather than to the fibre itself.
Typical limits
Buyers commonly write moving to non-detect targets with a stated tolerance, then verify against EN 17681 tests after degradation. Keeping reference values for PFAS Restrictions lets suppliers quote without extra sampling rounds. Ask for conditioning details together with EN 17681 tests after degradation, since both affect the reading.
Sources of variation
Conditioning time, operator technique and shade all influence the result. Working figures for PFAS Restrictions normally sit around moving to non-detect targets in mainstream production. Note EN 17681 tests after degradation 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 PFAS Restrictions, because blends shift the measured value. A result outside moving to non-detect targets usually points to process drift rather than to the fibre itself.
