What Is the Certificate?
ISCC PLUS is a sustainability and traceability scheme developed for sectors outside biofuels: the chain of custody for bio-based and circular (recycled) materials. It is widely used in the chemical, plastics and packaging sectors to verify chemical-recycling and bio-based raw-material claims.
Who Needs It?
- Chemical and petrochemical manufacturers
- Plastic raw-material and converter firms
- Bio-based product manufacturers
- Chemical-recycling facilities
- Packaging and consumer-product brands making a circular-content claim
Is It Mandatory?
Voluntary. Demand is growing because of brand owners' recycled-content commitments and the recycled-content targets in packaging legislation.
Scope of the Standard
- Sustainability criteria and verification of the raw-material source
- Definitions of bio-based, circular and mixed raw material
- The mass-balance method and conversion factors (yield)
- Credit-allocation rules and calculating the claimable quantity
- Chain-of-custody records and volume reconciliation
- Issuing sustainability declarations
- Minimum social and environmental requirements
- Certification of every link in the chain
Certification Process
- 1Application and Product DescriptionThe product family, model list, technical specifications and target market are determined. The applicable standard and certification route become clear at this step.
- 2Technical File ReviewDesign documents, the bill of materials, critical-component certificates and the instructions for use are examined.
- 3Product TestingThe tests the relevant standard requires are carried out. The test report is the fundamental basis for the certification decision.
- 4Factory AuditIf the scheme requires it, the continuity of manufacturing and factory production control (FPC) are verified on site.
- 5Issuing the Certificate and MarkingOnce conformity is verified, the certificate is issued; the marking rules for the product and packaging are applied.
- 6Follow-up AuditsDepending on the scheme, periodic factory audits and/or follow-up testing on samples taken from the market are carried out.
Period of Validity
The validity period varies by scheme: some product certificates are indefinite and rely on periodic factory audits, while some schemes (e.g. country market marks) require annual or per-shipment renewal. Every design change to the product requires the certificate to be reviewed.
Required Documents
- The list of product models and variants
- Technical drawings, diagrams and the bill of materials
- Certificates for critical components
- The instructions for use and a sample label
- Existing test reports, if any
- Production-site details
Certification Cost
There is no fixed list price; the cost is calculated based on the following variables and provided in writing in the quote.
- The number of models and variants in the product family
- The test scope the applicable standard requires
- Whether a factory audit is required
- The number of target markets and whether each requires separate testing
- Whether existing test reports can be accepted
Accreditation
Product certification is carried out under ISO/IEC 17065; The tests that form the basis for certification are carried out in laboratories with ISO/IEC 17025 accreditation. The two scopes are separate. Recognition between accreditation bodies is provided through IAF and ILAC agreements.
The scope under which this scheme can be offered varies according to your product and activity; it is confirmed in writing at the quote stage.
Scope and authorisationsRelated Certifications
Frequently Asked Questions
How does mass balance work in chemical recycling?
Output equal to the amount of recycled raw material entering a mixed process can be claimed as recycled. Because it is not possible to physically separate the molecules, an accounting method is used; verifying the conversion factors is central to the audit.
If I have the certificate, can I use the logo on my product?
Logo use is subject to separate rules and requires the scheme owner's approval. The whole chain must also be certified: an uncertified intermediate link (subcontracted processing, sewing, packaging) breaks the chain, and no claim can then be made on the final product.
What does mass balance mean?
It is an accounting method that allows output equal to the certified input volume to be sold as certified; physical separation is not required. In the physical-separation (segregation) method, certified material is kept apart throughout production. Which method is used is stated on the certificate and the sales documents.


