Reference Desk -- Field Notes
Frequently Asked Questions
A structured reference on how we judge materials, what certificates actually cover, how the 2026 regulatory floor changes your obligations, and where we stand commercially. No marketing copy -- only verifiable answers.
How We Judge a Material
Our verdicts are compiled from suppliers' published specifications, the scope and limits of their certificates, and primary regulatory sources. We do not operate a laboratory. This is what we look for -- and what disqualifies a material outright.
What does "bio-based" actually mean, and why is it a compliance risk?
"Bio-based" is not a legal definition of a material's environmental merit -- it is a measure of carbon origin. In practice, a commercial plant-based leather is commonly 30-65% polyurethane or acrylic resin by mass, with the plant fibre acting as a filler. Under EU EmpCo (2024/825), the term "bio-based" triggers a substantiation duty: you must be able to prove the bio-content percentage by mass. If you cannot, the claim is non-compliant.
Practical rule: always ask a supplier for the bio-based percentage by weight and the test method used. If they cannot provide it, treat the claim as unsubstantiated.
Why do samples perform well but production batches drift?
Showroom swatches are often produced under controlled conditions with selected raw inputs. Full production runs use different lots of bio-filler, resin, and backing fabric -- and the ratio drifts. We hold no test data of our own on this drift -- Material Primer does not bench-test materials. Ask the supplier for results from the production lot rather than relying on a swatch.
What to demand: batch-lot records with test certificates for each production run, not a single "type approval" document. The document chain must survive a third-party audit.
Do you run performance tests yourselves?
No. We do not operate a laboratory and we have never bench-tested a material. What we do is read the supplier's own test report and check it against the standard it cites. These are the standards worth asking for:
- Tensile strength (ISO 13934-1) -- how much force before tearing.
- Dry-rub & wet-rub (ISO 105-X12) -- colour transfer and surface degradation.
- Flex resistance (ISO 5402) -- cracking under repeated bending, critical for footwear and gussets.
- Martindale abrasion (ISO 12947) -- surface wear cycles.
- Hydrolytic ageing -- accelerated humidity cycling for debonding; ask which method, temperature and duration were used.
Where we mark a material unsuitable for an application, that judgement is drawn from the supplier's own published specification, the scope and limits of its certificates, and the applicable standard -- not from our own bench testing. If you need numbers you can rely on, budget for your own bench testing.
Certificates & What They Do Not Cover
A certificate is evidence of a defined scope -- nothing more. The question is not "is it certified" but "what does this certificate NOT verify?"
GRS vs. GOTS vs. OEKO-TEX -- which one do I actually need?
These are not interchangeable. They certify different claims:
- GRS (Global Recycled Standard) -- verifies recycled content percentage and chain of custody. It does NOT verify environmental impact or absence of harmful chemicals.
- GOTS (Global Organic Textile Standard) -- applies to organic natural fibres. It does NOT cover synthetic or bio-blend materials.
- OEKO-TEX Standard 100 -- tests for harmful substances in the finished product. It does NOT verify recycled content or bio-based origin.
For a leather-alternative buyer, you may need two certificates: one for recycled content (GRS) and one for chemical safety (OEKO-TEX). No single mark covers both.
What is "Tier-2 traceability" and why does it keep failing?
Tier-1 is the factory that cuts and sews your product. Tier-2 is the mill that produces the material itself -- and Tier-3 is the chemical or fibre producer. Most supply chains break at Tier-2: a brand can audit its cut-and-sew factory, but the material mill is one step removed and often refuses to share its own input sources.
The EU Digital Product Passport (ESPR) is designed to fix exactly this layer. From 19 July 2026, large companies must register DPP identifiers; the textile delegated act is expected in force 2027 with compliance around 2029. If your supplier cannot show you a Tier-2 chain of custody today, they will be non-compliant before the decade ends.
A supplier says they are "certified". Is that enough for EU compliance?
No. A certificate is a snapshot in time from a private body; it is not a legal shield. Under EU EmpCo (2024/825), the burden of substantiation sits with you as the brand placing the claim on the market. If a certificate is later found to be based on inaccurate data, you are liable -- not the certifier.
The practical test: can you forward the certificate to your legal counsel and defend the exact wording of your marketing claim with it? If there is any gap between the certificate's scope and your claim, the certificate is not enough.
The 2026 Regulatory Floor
The rules change on 27 September 2026. Here is what is actually in force, what is only proposed, and how enforcement will work.
Is the EU Green Claims Directive still coming?
No — though not because it was withdrawn, which is what most sources now say. On 20 June 2025 the Commission announced it intended to withdraw the standalone Green Claims Directive proposal and the third trilogue was cancelled, but no formal withdrawal has been published: the file is still listed among pending proposals in the 2026 Commission work programme (COM(2025) 870, Annex III) and the procedure record 2023/0085(COD) remains open. It is stalled, not dead. Either way it is not law, so do not cite it as law or plan compliance around it. The binding instrument is the ECGT / EmpCo Directive (2024/825), which was already adopted. Transposition deadline was 27 March 2026, and the rules apply from 27 September 2026.
What exactly becomes illegal on 27 September 2026?
Three specific practices become non-compliant:
- Generic claims -- terms like "environmentally friendly", "green", or "sustainable" without substantiation are banned outright.
- Offset-based "climate neutral" claims -- you cannot label a product "carbon neutral" or "climate neutral" based on carbon offsets. The claim must be based on the product's actual lifecycle emissions.
- Self-created sustainability labels -- private, non-certified marks are restricted unless they meet defined standards.
The burden of proof is on you, the brand. You must substantiate the claim before publishing it.
Who can file a complaint, and what is the penalty?
Enforcement is deliberately aggressive. National authorities may act on their own initiative -- no complaint needed. Both consumers and your competitors may file complaints. The Dutch ACM, a leading enforcer, has published a ceiling of EUR 900,000 per violation or 10% of annual turnover, whichever is higher.
For a mid-size brand, a single non-compliant claim on a product page is a material financial risk. This is why document chains and batch-level substantiation are no longer optional.
What is the ESPR Digital Product Passport deadline?
From 19 July 2026, large companies may not destroy unsold apparel, footwear, and accessories. The EU registry for Digital Product Passport identifiers goes live the same day. The textile delegated act is expected in force 2027, with compliance around 2029. SMEs have until 19 July 2030.
The DPP will require material composition, recycled content, and chain-of-custody data at the batch level. If your supplier cannot produce this data today, they are a future compliance risk.
Our Commercial Stance
We are not "independent of all suppliers" -- that would be untrue. We are specific about how we make money and how that is separated from our verdicts.
How do you make money if you do not sell materials?
Three revenue streams, all separated from editorial judgement:
- Referral commissions -- when an enterprise buyer contracts with a listed supplier via our ledger, we may receive a standard referral fee.
- Downloadable compliance tables -- checklists and regulatory summaries sold as documents for internal legal review.
- Paid database listings -- a supplier may pay to be LISTED, never to be RECOMMENDED.
Suppliers cannot pay to alter a negative finding, cannot remove limitation warnings, and cannot influence our verdicts. This separation is contractual.
Why do you publish negative findings about materials?
Because it is the one thing a seller structurally cannot publish -- and it is the most valuable information we produce. If we only published positive findings, we would be a promotional brochure. Our negative findings -- for example, that a supplier's own specification or the scope of its certificate does not cover the application a buyer has in mind -- are what make the rest of the record credible.
We also publish negative findings regardless of commercial relationship. A supplier who pays for a listing cannot edit or remove a limitation warning.
Are you truly independent of all suppliers?
No -- and anyone who claims that is selling something. We have commercial relationships with suppliers who pay for listings. What we guarantee is a strict separation: payment buys visibility in the database, never a recommendation, never a positive verdict, and never the removal of a negative finding.
Our credibility rests on showing our sources -- supplier-published specifications, the exact scope of the certificates cited, and the named standards behind them -- not on a claim of absence of interest. If a supplier is unhappy with our findings, they cannot buy a change. That is the contract.
Do you rank brands or materials against each other?
No. We publish category-level facts and teach judgement. We write "cactus-fibre sheets commonly contain 30-65% polyurethane" and teach you to ask a supplier for the bio-based percentage by weight. We do not publish "Brand X is better than Brand Y".
Ranking brands would make us a judge, not a reference -- and it would create an incentive for suppliers to lobby us. Category-level facts keep the incentive structure clean.
Have a Claim You Need Verified?
Forward a supplier claim, Certificate of Analysis, or composition declaration. We check the documents against the standards they cite, the scope of the certificates behind them, and current EU 2024/825 compliance rules. We do not operate a laboratory and we do not bench-test materials. This is a document review -- not a sales inquiry.