Restricted Substances List (RSL) How to Read It on a Lab Report
Laboratory reports present Restricted Substances List (RSL) in a compact format. Knowing what each line means prevents misreading.
Definition reminder
list of banned or limited chemicals. 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.
Common report layout
The report states method brand-specific published list, sample description, conditioning, and the measured result. 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 result
Values near reviewed each season usually indicate a conforming lot, assuming the fabric matches the sample submitted. 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.
Red flags
Missing revision numbers, unusual conditioning, and results without units all signal unreliable data. 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.
Questions to ask
Ask the laboratory for the standard revision and sample description before accepting or rejecting a result. 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.
