
Official certificates based on current EU directives & standards.
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Audit and certification system for the independent verification of environmental, sustainability and ESG claims based on the EmpCo Directive and the CLAIMTRUST® audit standard.
CLAIMTRUST® – Verified Claim Compliance is an audit and certification system for the independent assessment of environmental, sustainability and ESG statements. The system does not certify a company's or product's environmental performance as such, but the factual, traceable and documented permissibility of specific claims based on defined audit standards. The aim is to prevent misleading environmental communication and to create transparency, traceability and trust vis-à-vis customers, investors, business partners and supervisory authorities.
The procedure is guided in particular by:
The aim is to prevent misleading, insufficiently substantiated or overly general environmental and sustainability statements.
The audit procedure applies in particular to environmental claims, sustainability claims, ESG statements, recycled content, recycling and compostability claims, climate neutrality and CO₂-related statements, statements on future environmental performance, and company-related sustainability statements in marketing, advertising, website content, ESG and annual reports, and investor communications.
Actual environmental performance as such is not the subject of certification. Certification covers exclusively the permissibility, verifiability and transparency of the respective statement.
The audit follows in particular the following principles:
Subject of certification: Only the specific statement (claim) is certified. Companies as a whole, products as a whole, general environmental performance or unspecified sustainability promises are not certified.
The audit comprises a structural review (wording, scope, reference object, target audience, context of use), an evidence review (documentation, certificates, supplier declarations, ESG reports, calculations, audit reports) and a legal conformity review (specificity, transparency, verifiability, risk of misleading, scope, context).
Validity: CLAIMTRUST certifications are generally valid for 24 months. Material changes to the statement or evidence must be reported without delay.
Before certification, a digital CLAIMTRUST PreCheck can be carried out. The PreCheck serves risk analysis, claim readiness assessment, documentation review, transparency evaluation and identification of potential greenwashing risks. The PreCheck is not a full certification.
Pricing is based solely on the number of claims: CLAIMTRUST Quickscan (immediate risk analysis, traffic-light RED/YELLOW/GREEN) from €49.99, Basic up to 5 claims (€199), Professional up to 15 claims (€499), Business up to 30 claims (€999), and Enterprise (more than 30 claims) as an individual quote.
CLAIMTRUST certifications can be provided as a digital certificate with QR code and token ID. Tokens and certificates are only generated after manual approval by ZERKOM. Public verification is via verify.zerkom.de, enabling certified claims to be checked transparently and traceably.
CLAIMTRUST® was developed within the ZERKOM framework and is based on the core principles of transparency, traceability and independent assessment. While ZERKOM provides the organisational and regulatory framework, CLAIMTRUST® serves as a specialised audit and certification system for assessing specific environmental, sustainability and ESG claims.

100% compostability based on binding test standards to ensure residue-free degradation (no microplastic residues), soil compatibility and complete breakdown.
The guarantee mark "100% compostable" identifies products whose 100% compostability has been independently tested and confirmed. It ensures that products are 100% degraded after use without burdening the soil, the environment or the organisms living in it.
The mark is based on a binding guarantee mark charter, clearly defined test standards, independent test procedures and ongoing monitoring. This goes significantly beyond general environmental labels or purely promotional statements.
The ZERKOM® guarantee mark "100% compostable" stands for a clearly tested, bindingly regulated and transparently monitored 100% compostability of products. It creates legal certainty, reduces greenwashing risks and strengthens the trust of authorities, business partners and consumers.

Technical certification seal for the independent verification of recycled content in products and packaging, based on the ZERKOM framework.
TECHUM – Verified Recycled Content is a technical certification seal for the independent verification of recycled content in products and packaging. The seal confirms the actual proportion of recycled material based on documented evidence, clearly defined system boundaries and a transparent audit methodology. The aim is to substantively underpin quantitative recycled content claims vis-à-vis the market, consumers and supervisory authorities.
This audit procedure defines the binding requirements for the independent verification of recycled content within the framework of the certification seal TECHUM – Verified Recycled Content.
The procedure serves to substantively underpin quantitative environmental claims and is designed to fulfil the requirements of:
The aim is to avoid misleading or unsubstantiated environmental claims and to ensure traceable, verifiable and proportionate documentation.
This audit procedure applies to:
Not covered by this audit procedure:
This delineation serves legal certainty and claim clarity in accordance with the EmpCo Directive.
The audit follows the principles of:
4.1 Recycled content: Proportion of material recovered from waste and reintroduced into the production process.
Standard reference: ISO 14021:2016 – Environmental labels and declarations; EN 15343 – Plastics – Recycled Plastics – Traceability
4.2 Post-Consumer Recycled Material (PCR): Material from waste arising after use by end consumers or commercial end users.
Standard reference: ISO 14021; ISO 22095 – Chain of Custody
4.3 Pre-Consumer Recycled Material (PIR): Material from production residues that were not part of the final product and arise before use by end consumers.
Standard reference: ISO 14021
5.1 Subject of certification: The percentage recycled content of a clearly defined product or product line is certified. Overall ecological impacts or recyclability are not covered.
5.3 Audit basis: Review of supplier declarations, production data and plausibility check of quantity ratios.
5.5 Validity: Certificates are valid for 12 months. Changes in material composition must be reported.
TECHUM was developed within the ZERKOM framework and follows its principles of traceability and independence. While ZERKOM acts as the regulatory framework, TECHUM takes on the concrete certification application.

Extended product cycle standard based on the EU Circular Economy Strategy and ZERKOM® material analytics.
Cradle to Cradle Certified by ZERKOM® is an independent sustainability and quality standard that demonstrates that products are fully circular and that their materials can be returned to biological or technical cycles without loss of quality. The combination of European Circular Economy Strategy and the scientifically based ZERKOM® material analytics achieves a particularly high level of transparency and security that goes far beyond conventional environmental labels.
Cradle to Cradle Certified by ZERKOM® is a central building block for companies that want to design their products in a demonstrably sustainable, circular and future-proof manner. The certificate strengthens ESG performance, supports compliance with European requirements and creates clear advantages in competition and in sustainable supply chains.

Audits ESG reports in accordance with EU-CSRD, ESRS and EMCO directives. Creates transparency and meets the new Europe-wide audit requirements.
This certificate confirms that an ESG report meets the requirements of the EU Corporate Sustainability Reporting Directive (CSRD), the European Sustainability Reporting Standards (ESRS) and the EMCO guidelines in terms of content, structure and regulatory compliance. ZERKOM® ensures that sustainability reports are complete, auditable and free of material misstatements, thereby legally fulfilling the new European disclosure obligations.
ESG Reporting Certified by ZERKOM® gives companies the certainty that their sustainability reporting meets European requirements, is audit-proof and guarantees a high degree of transparency. The certificate strengthens credibility, reduces risks and supports successful positioning in an increasingly regulated market environment.

Audits materials and processes for complete compostability in accordance with DIN EN 13432, ISO 17088 and the EU Green Claims Directive. Ensures regulatory compliance at an early stage.
This certificate confirms that materials, components or manufacturing processes have been tested for compostability, material health and regulatory suitability at an early stage of development. The ZERKOM® PreCheck analyses the composition, biological degradation pathways and potential risks, thereby creating a reliable basis for subsequent certifications and market approvals.
ZERKOM® PreCheck Certified is a decisive building block for companies developing materials or packaging who want to ensure at an early stage that these comply with European requirements for compostability and circularity. The certificate supports efficient product development, creates regulatory clarity and facilitates subsequent certification.

Evaluates packaging in accordance with ISO 18604, ISO 14021 and the new EU Packaging & Packaging Waste Regulation (PPWR 2024). Ensures your design meets future EU requirements.
This certificate confirms that packaging complies with the requirements of international standards and the new European packaging regulation in terms of material selection, recyclability, labelling, disposal routes and environmental impact. Green Packaging Verified provides an independent assessment of whether a packaging design can withstand upcoming regulatory requirements and is genuinely ecologically optimised.
Green Packaging Verified offers companies a reliable, standards-compliant and future-proof assessment of their packaging. It supports compliance with PPWR 2024, reduces legal risks and improves environmental performance throughout the entire packaging lifecycle.

Analyses materials in accordance with ISO 59010, DIN EN 45554 and the EU Circular Economy Action Plan. Demonstrates how circular your products truly are.
This certificate examines the extent to which materials and product components are suitable for reuse in technical or biological cycles. Circular Material Certified evaluates recyclability, repairability, reuse options and the quality of material flows, thereby transparently demonstrating how far a product already meets the objectives of the European circular economy.
Circular Material Certified provides companies with a scientifically sound assessment of the circularity of their materials and supports them in developing products in a compliant, resource-efficient and future-proof manner. The certificate clearly shows how far a product already meets the requirements of the European Circular Economy and what potential can still be tapped.

Validates CO₂ emissions in accordance with ISO 14064, ISO 14067, GHG Protocol and EU ESRS E1. Makes climate neutrality robust and auditable – without greenwashing.
This certificate confirms that a company has fully, correctly and traceably recorded and assessed its CO₂ emissions in accordance with international standards and European disclosure standards. CO₂-Neutral Process Verified audits emission sources, calculation methods, reduction strategies and compensation measures and ensures that statements on climate neutrality are objectively verifiable and robust under regulatory scrutiny.
CO₂-Neutral Process Verified provides a reliable, internationally recognised basis for robust climate neutrality strategies. Companies receive a certificate that creates transparency, ensures regulatory certainty and lastingly strengthens the credibility of their climate protection measures.

Audits ESG data and reporting systems based on ISO 37301, ISO 27001, EU-CSRD and ESRS. Protects against incorrect or non-CSRD-compliant disclosures.
This certificate confirms that a company's ESG data is correctly, completely, consistently and compliantly captured, processed and documented. ESG Data Integrity Certified evaluates data sources, internal control systems, IT security structures and the entire data processing chain for ESG reporting, ensuring that sustainability information meets the requirements of EU-CSRD and ESRS standards.
ESG Data Integrity Certified provides companies with a reliable basis for correct, consistent and auditable ESG data. The certification ensures compliance with EU-CSRD, strengthens the credibility of ESG reporting and protects against regulatory and reputational risks.

Audit in accordance with LkSG, OECD Due Diligence Guidance and ISO 20400. Certifies transparent supply chains and minimises compliance risks.
This certificate confirms that a company has reviewed, documented and monitored its supply chain in accordance with recognised international standards. Supply Chain Transparency Certified evaluates human rights, ecological and organisational risks along the entire value chain and ensures that companies meet the requirements of the German Supply Chain Due Diligence Act (LkSG), the OECD Due Diligence Guidance and the sustainable procurement standards in accordance with ISO 20400.
Supply Chain Transparency Certified provides a sound, internationally recognised basis for transparent and responsible supply chains. Companies receive a certificate that creates regulatory certainty, minimises risks and lastingly strengthens the sustainable procurement strategy.

Determines bio-based content in accordance with ASTM D6866, EN 16785-1, ISO 16620-2. Provides clear proof for sustainable raw material proportions.
This certificate confirms what proportion of a material or product actually comes from renewable, bio-based raw materials. Bio-Based Content Certified is based on recognised international test methods such as ASTM D6866, EN 16785-1 and ISO 16620-2 and enables scientifically sound and transparent proof of the bio-based material content.
Bio-Based Content Certified provides companies with transparent, standards-based proof of the proportion of bio-based materials and strengthens their credibility in sustainable markets. The certificate facilitates regulatory compliance, optimises environmental communication and strengthens the position in sustainable supply chains.

Audit for AI-based models in accordance with ISO/IEC 30173, ISO 14040 and EU AI Act. Evaluates environmental impacts of digital twins.
This certificate evaluates digital twins and AI-based models in terms of their ecological impacts, data integrity and model transparency. Digital Twin Sustainability Audit examines both the technical model structure and the underlying environmental and resource data, confirming that the digital twin meets the requirements of ISO/IEC 30173, the environmental assessment criteria of ISO 14040 and the provisions of the EU AI Act.
The Digital Twin Sustainability Audit provides companies with a sound, standards-compliant assessment of their AI-based models and digital twins. The certificate creates transparency, reduces risks, strengthens regulatory compliance and enables sustainability-oriented further development of digital systems.

Validates integrated ESG data structures in accordance with ISO 37301, ISO 14064 and EU-ESRS. Enables consistent sustainability data without discrepancies.
This certificate confirms that a company's ESG data is captured and processed in an integrated, consistent and compliant data system. ISD Certified evaluates the linking of environmental, social and governance data in a central structure, reviews compliance with the requirements of ISO 37301 (compliance management), ISO 14064 (greenhouse gas accounting) and the European Sustainability Reporting Standards (ESRS), and ensures that all data is consistent and audit-ready.
ISD Certified (Integrated Data) provides companies with a clear, standards-based confirmation that their ESG data structures are fully integrated, consistent and compliantly structured. The certificate increases data quality, reduces reporting risks and strengthens transparency across the entire sustainability management system.

AI-supported zero-waste audit based on ISO 14045, ISO 50001 and the EU Eco-Design Directive. Identifies savings potential.
This certificate evaluates a company's processes, materials and production workflows in terms of resource efficiency and waste prevention. Zero Material Waste Certified combines AI-supported process analyses with the requirements of ISO 14045 (eco-efficiency), ISO 50001 (energy management) and the EU Eco-Design Directive, showing how companies can reduce material losses and design cycles more efficiently.
Zero Material Waste Certified provides a sound, AI-supported assessment of a company's resource efficiency and clearly shows how material flows can be improved and waste reduced. The certificate supports a sustainable and economically efficient production method and strengthens the company's position in an increasingly resource-conscious market environment.

Comprehensive sustainability certification for clinics and medical facilities
Sustainable Healthcare Facility Certified by ZERKOM® is an independent sustainability and organisational certificate for clinics, hospitals and medical facilities. It confirms that the entire clinic operation is structured, documented and continuously improved according to verifiable environmental, resource and governance criteria.
The certification does not evaluate medical services or therapies, but exclusively operational, infrastructural and organisational sustainability aspects. ZERKOM® thus creates a legally sound, transparent and internationally compatible basis for sustainable health infrastructures.
An independent guarantee for consumers and trade. We verify compliance with specific standards and offer legally sound quality seals.
A guarantee mark is a special type of trade mark that serves to guarantee certain properties or quality characteristics of goods or services. These marks are not used by the manufacturer of the products themselves, but by an independent body (ZERKOM®) that verifies and certifies compliance with certain standards. The main function of a guarantee mark is to signal to the consumer that the product or service meets certain established criteria.
A quality seal is a visible sign (often in the form of a logo) affixed to products to indicate that they comply with the standards established by the guarantee mark. Only the holder of the guarantee mark has the right to award this quality seal. The holder is generally an independent organisation or institution that carries out regular checks to ensure that the products or services meet the established requirements.
Word mark / Fancy mark: Serves to distinguish a company's goods from those of other companies (origin function). Examples: "Kodak" or "Xerox".
Guarantee mark: Confirms certain quality standards independently of the manufacturer (guarantee function). ZERKOM® uses this for guaranteed product properties.
The guarantee mark "100% Compostable Packaging or Products" means that all packaging or products bearing this quality seal are fully compostable and thus comply with certain environmental standards. This mark guarantees the consumer:
Only the holder of this guarantee mark has the right to award the "100% Compostable Packaging or Products" quality seal to manufacturers whose products meet the established criteria. This ensures that only tested and certified products may bear this seal.
The certification of 100% compostable packaging or products by ZERKOM® gives companies not only the opportunity to build customer trust, but also demonstrates their commitment to sustainability. Our guarantee marks stand for verified quality and environmental friendliness.
Secure your seal now and protect your brand from legal warnings.
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