Bluesign System: Input Stream Management for Responsible Production
Bluesign evaluates every component of production, including chemicals, water, energy and emissions, rather than only the final product.
The following sections cover the definition, the specification values, production control, testing and commercial impact.

Input stream concept
Every chemical, dye and auxiliary entering the mill is assessed before it is approved for use.
Buyers who set expectations at the development stage spend far less time resolving complaints after the season has started.
Assessment scope
Resource use, occupational safety, water and air emissions, and consumer safety are all part of the review.
Review the limits each season against actual performance data instead of carrying the same figures forward indefinitely.
- Record settings and raw material lots for every approved production run
- Check in-process rather than relying on final inspection
- Escalate deviations the same day they appear
Approved fabrics and accessories
Certified articles carry the approved label and are listed in the system directory for verification.
Log adjustments and their reasons, which turns each production run into useful data for the next one.
Practical benefits for mills
Reduced chemical risk, lower waste treatment costs and an easier path to buyer compliance.
Track results over several seasons, because a slow drift is easier to correct than a sudden failure.
- Ask for a separate price line for the requirement
- Confirm minimum quantities before committing the colourway
- Build one extra approval round into the calendar
Verification by buyers
Confirm the article appears in the official directory rather than relying on a supplier statement alone.
Document what is included in the price, including testing, packing and documentation, to keep comparisons fair.
Summary
Handled early, the requirement costs little and protects the launch date; handled late, it becomes an argument about responsibility.