Packaging Supplier Sustainability Data Request FAQ

Data: ISO maintains environmental management and verification standards describing how organisations define, control and evidence environmental performance at site and product level.

Judgment: Request management system evidence alongside product data, because a site with a controlled process is likelier to supply consistent material than one answering questionnaires without an internal system behind it.

Source: International Organization for Standardization - Environmental Management and Verification Standards (2024)

Data: TAPPI publishes technical resources on packaging materials and converting that define the material and process properties used to describe paper-based packaging consistently.

Judgment: Use one technical vocabulary across the request and the response, because a mismatch between buyer terms and supplier terms is a frequent cause of apparently contradictory answers.

Source: TAPPI - Packaging Materials and Converting Resources (2024)

Data: The U.S. Federal Trade Commission publishes rules and guidance on environmental marketing claims, defining the substantiation expectation for claims made to consumers about products and packaging.

Judgment: Request supplier evidence at the point of procurement, because a claim made downstream cannot be substantiated by a document that was never collected upstream.

Source: U.S. Federal Trade Commission - Truth in Advertising (2025)

Data: The Biodegradable Products Institute certifies compostable products against recognised standards and maintains public listings of certified items by product.

Judgment: Verify supplier certification claims against the certifying body's listing, because a certificate image in an email is not the same as a current entry in the issuing body's register.

Source: Biodegradable Products Institute - Compostable Product Certification (2025)

What sustainability data should a brand request from a packaging supplier?

Request four classes of data: material composition per SKU, certification and test evidence tied to that SKU, environmental performance data such as recycled content and any footprint figure with its scope, and management system evidence covering the site where the packaging is produced. Ask for the document revision and issue date with each item, because a declaration without a revision cannot be linked to the material actually supplied. Where a figure is estimated rather than measured, require the supplier to state that.

How do you compare sustainability data from different packaging suppliers?

Compare like with like by fixing the question set and the units before sending the request, then score completeness and verification separately from the reported values. A supplier with a modest but verified figure is a safer basis than one offering a better unverified number. Where data gaps exist, record them as gaps rather than filling them with estimates, and treat the gap itself as a procurement signal about the supplier's measurement maturity and internal data systems.

How often should supplier sustainability data be refreshed?

On three triggers: at supplier qualification, annually for active suppliers, and immediately on any change of material, production site or subcontractor. Certificates carry expiry dates and material formulations change, so an annual cycle with change-triggered refresh captures most risk without generating continuous paperwork. Tie every response to a named supplier contact and a date, so the file shows who answered and when, which matters when a downstream customer or regulator asks how the data was obtained.

What evidence rule should apply to a supplier certificate?

The certificate must name the material or product actually supplied, and it should be checked against the issuing body's public listing or register rather than accepted as an emailed image. A certificate issued for a material family does not automatically cover a finished printed pack, so the gap should be closed with a per-SKU statement. Record the standard, the issuing body, the scope and the expiry date, and alert on expiry rather than discovering it during a customer questionnaire.

Why do supplier sustainability answers differ so much in quality?

Mostly because suppliers have never been asked for the data per SKU and have no internal register to draw on. Their first response is usually assembled ad hoc from certificates, purchasing records and marketing material, which is why units and definitions vary between answers. That makes the second request materially better than the first, provided the first was specific. A brand that fixes its question set and evidence rules typically receives usable answers within one or two cycles.

Should a brand fill supplier data gaps with industry averages?

Only as a clearly labelled estimate that cannot be traced to a claim, and preferably not at all where the figure will be published or used for fee calculations. Substituting an industry average for a missing supplier value creates a number that looks measured and behaves as an assumption, which is difficult to unpick later. The stronger practice is to record the gap, set a deadline for the supplier, and treat an unresolved gap as a qualification risk rather than a reporting inconvenience.