bluesign Approval Frequently Asked Questions
Short answers to the questions buyers ask most often about bluesign Approval.
What does it mean?
input stream chemical management system. 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.
What value should be specified?
Start from approved chemicals and resources and adjust for the end use of the garment. 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.
How is it tested?
bluesign audit process. 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.
Why does it change between lots?
Process variables such as finishing temperature and elastane batch cause the normal spread of results. 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.
Can results be compared across suppliers?
Only when the same standard revision and conditioning are used; otherwise measurements are not equivalent. 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.
