bluesign Approval Specification Targets for Buyers
Setting bluesign Approval correctly on a tech pack prevents most later disputes. Targets belong on the page before the first fabric sample.
Where to write it
Place bluesign Approval next to composition and weight so all three are quoted as one package. Working figures for bluesign Approval normally sit around approved chemicals and resources in mainstream production. Note bluesign audit process on the tech pack so nobody tests against an older revision.
Reference level
Typical activewear expectation: approved chemicals and resources. Record elastane content alongside bluesign Approval, because blends shift the measured value. A result outside approved chemicals and resources 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 bluesign Approval lets suppliers quote without extra sampling rounds. Ask for conditioning details together with bluesign audit process, since both affect the reading.
Verification method
Confirm with bluesign audit process and keep the report against the bulk record. Working figures for bluesign Approval normally sit around approved chemicals and resources in mainstream production. Note bluesign audit process 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 bluesign Approval, because blends shift the measured value. A result outside approved chemicals and resources usually points to process drift rather than to the fibre itself.