Colour Fastness to Perspiration Specification Targets for Buyers
Setting Colour Fastness to Perspiration correctly on a tech pack prevents most later disputes. Targets belong on the page before the first fabric sample.
Where to write it
Place Colour Fastness to Perspiration next to composition and weight so all three are quoted as one package. Working figures for Colour Fastness to Perspiration normally sit around grade 4 minimum in mainstream production. Note ISO 105-E04 perspiration on the tech pack so nobody tests against an older revision.
Reference level
Typical activewear expectation: grade 4 minimum. Record elastane content alongside Colour Fastness to Perspiration, because blends shift the measured value. A result outside grade 4 minimum usually points to process drift rather than to the fibre itself.
Tolerances that work
Allow a small tolerance rather than a fixed number, since normal process variation exists in every lot. Keeping reference values for Colour Fastness to Perspiration lets suppliers quote without extra sampling rounds. Ask for conditioning details together with ISO 105-E04 perspiration, since both affect the reading.
Verification method
Confirm with ISO 105-E04 perspiration and keep the report against the bulk record. Working figures for Colour Fastness to Perspiration normally sit around grade 4 minimum in mainstream production. Note ISO 105-E04 perspiration on the tech pack so nobody tests against an older revision.
Commercial note
Tightening beyond practical need raises cost without improving garment life, so set the tightest target only where it protects the customer. Record elastane content alongside Colour Fastness to Perspiration, because blends shift the measured value. A result outside grade 4 minimum usually points to process drift rather than to the fibre itself.
