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