Mass-balance evidence needs careful language. It may support an allocation-based statement, but it does not automatically prove that the physical bottle body is made entirely from recycled plastic.
The business situation
This article looks at a water bottle project where mass-balance files arrive and the page team wants to write 100% recycled plastic. The practical problem is not whether the seller owns a file. The problem is whether that file describes the same product object that the customer sees on the page.
For plastic product sellers working with chain-of-custody or mass-balance documentation, a green claim usually moves through several hands: supplier evidence, internal product data, marketplace listing copy, image text, packaging and customer-support language. If one hand changes the subject of the claim, the wording may become larger than the evidence.
Where the claim can go wrong
Describing allocation-based evidence as a physical-content claim for the bottle body. This is a common failure because the file looks relevant, the product name sounds close, and the team wants a shorter statement. But Climate Pledge Friendly and third-party certification routes are product- and evidence-specific. A seller should keep the subject, scope and version visible before changing customer-facing copy.
Evidence checks before page wording
- Determine whether the evidence is physical segregation, controlled blending or mass balance.
- Avoid wording that implies physical 100% recycled content when the file supports allocation.
- Check product part boundaries: bottle body, cap, straw, sleeve, label and package.
- Keep allocation period, supplier entity and product family traceable in the evidence table.
Claim wording control
| Risky | Bottle body made from 100% recycled plastic |
|---|---|
| Safer when supported | Uses certified mass-balance attributed material; do not imply physical recycled content unless proven |
The safer wording is still not a universal template. It only becomes usable when the seller's actual documents support the object, percentage, component, product version and market page where the statement appears.
Internal ownership
Compliance should approve the chain-of-custody language before operations places it in title, bullets or visual modules. The review record should show what is confirmed now, what needs a qualifier, and what must wait for additional evidence.
How Greenark can support
Greenark (Shenzhen) Certification Co., Ltd. can help sellers organize product-evidence tables, compare supplier documents with marketplace wording, and identify where a proposed CPF-related claim is too broad for the available files. This is claim-boundary and documentation support, not a guarantee of any platform or certification result.
