Quality Assurance Services
Independent, rigorous quality assurance for Life Cycle Assessments—from critical review to technical model audits.
Every sustainability claim starts with data. Whether you are publishing an EPD, reporting a Product Carbon Footprint, or making public environmental claims—the credibility of your results depends on the quality of your LCA. Our three core services ensure that your methodology is sound, your data is accurate, and your outputs meet the standards your stakeholders expect.
Critical Review
Methodological Validation
A formal, independent evaluation of your Life Cycle Assessment (LCA) or Product Carbon Footprint (PCF) study. While Verification focuses on the data, the Critical Review focuses on the scientific validity of your methods, ensuring your study design is robust, transparent, and compliant with international norms.
Applicable Standards
- ISO 14040 & 14044: Applicable for all LCA studies. Note: A Critical Review by a panel of interested parties is mandatory for comparative assertions intended for public disclosure.
- ISO 14067: Applicable for PCF studies where methodological robustness needs to be demonstrated (e.g., prior to verification).
- ISO 14071: Defines the specific process and reviewer competencies we adhere to.
Key Benefits
- Scientific Robustness: Ensures that your methodological choices (e.g., allocation rules, cut-off criteria) are scientifically valid and technically sound.
- Risk Mitigation: Protects your reputation by identifying methodological flaws before publication, reducing the risk of challenges from stakeholders or competitors.
- Enable Comparative Claims: Fulfills the strict ISO mandate required to publish comparisons (e.g., "Product A has a lower Global Warming Potential than Product B").
- Stakeholder Credibility: Demonstrates to investors and NGOs that your study methodology has withstood rigorous, independent scrutiny.
What We Do
- We conduct the review according to ISO 14071, acting either as a single independent expert or as a chair/member of a review panel.
- We validate that the "Goal and Scope," including system boundaries and functional units, are defined and compliant with the target standard (e.g., ISO 14040/44 or ISO 14067).
- We assess the LCI and LCIA phases to ensure calculation models and impact assessment methods are applied consistently.
- We ensure the final report is transparent and interpretation conclusions are supported by the data and limitations.
- We issue a Critical Review Statement confirming the study's conformity with the chosen standard.
Verification & Validation
Data Reliability & Compliance
Verification provides objective evidence that your specific environmental declarations or datasets are accurate, reliable, and materially correct. This service is essential for confirming that your reported numbers (e.g., PCF values) adhere to specific industry rules and are ready for B2B exchange or external reporting.
Applicable Standards
- Together for Sustainability (TfS): Required for "Level 3" verification to share PCF data with chemical industry partners.
- ISO 14067 / ISO 14064-3: Required to prove the accuracy of a Product Carbon Footprint (PCF) statement.
- Catena-X / PACT: Required for verified data exchange in the automotive and value chain networks.
- EPD (EN 15804 / ISO 14025): Verification of the EPD background report and data for publication.
Key Benefits
- Audit-Ready Data: Provides assurance that your reported emissions are free from material misstatements and compliant with specific accounting rules.
- Supply Chain Compliance: Fulfill data quality requirements (e.g., Primary Data Share) demanded by customers in sectors like Automotive (Catena-X) or Chemicals (TfS).
- Market Access: Often a prerequisite for listing in supplier databases, participating in sustainable procurement tenders, or publishing Environmental Product Declarations (EPDs).
- Trust Signal: Shifts the burden of proof to an independent third party, bridging the credibility gap for your B2B customers.
What We Do
- We perform the verification engagement in accordance with ISO 14064-3 or the specific program rules (e.g., EPD General Programme Instructions).
- We verify compliance with specific Product Category Rules (PCRs) or sector guidelines (e.g., TfS Guideline, Catena-X Rulebook).
- We validate the data sources, checking for plausibility, completeness, and representativeness (Data Quality Rating).
- We perform recalculations and spot-checks to ensure the mathematical accuracy of the reported values.
- We issue a Verification Statement or Opinion Letter confirming the data is materially correct.
Technical QA of Data Collection, Models & LCA Tools
End-to-End Technical Audit
This comprehensive service ensures data integrity and technical robustness across your entire LCA workflow. We validate the raw data inputs before modeling begins and rigorously audit the calculation architecture—whether for a single product study or a generic EPD tool intended for automation.
Applicable Standards
- Internal Quality Gate: Essential "sanity check" before calculating final results to prevent "garbage in, garbage out."
- EPD Tool Verification: Mandatory pre-verification step for developers of EPD Tools (ISO 14025) to ensure the underlying generic model and report templates are correct.
- Together for Sustainability (TfS): Ensures compliance with specific modelling rules (e.g., allocation hierarchies) and data quality ratings (DQR).
Key Benefits
- Data Integrity at Source: Detects plausibility errors in raw data collection sheets (e.g., unit mix-ups) before they are hard-coded into the model.
- Scalability for Tools: By verifying generic models and LCA Tools, you ensure that all future datasets and reports generated from them are compliant by design.
- Physical Consistency: Rigorous mass, energy, and elemental balances ensure that inputs and outputs align with physical laws, preventing common errors like "missing waste flows."
- Sector-Specific Compliance: Hard-codes industry rules (e.g., TfS allocation hierarchies) into the model logic to ensure compliance by design.
What We Do
1. Data Collection & Input Validation
- For Product Studies: We review primary data collection sheets to identify gaps, outliers, or conversion errors (e.g., kWh vs. MJ) and perform plausibility checks via mass and elemental balances on the raw data.
- For LCA/EPD Tools: We validate the qualitative data requirements and input interfaces of your tool to ensure that the defined data entry fields accept only methodologically consistent data types (e.g., ensuring correct units and temporal scope).
- Representativeness Check: We verify that the collected or defined data meets the technological, geographical, and time-related requirements of the target standard (e.g., ISO 14044 or TfS).
2. Model Architecture & Tool Logic
- Implementation Check: We verify the correct transfer of validated data into the LCA software (e.g., GaBi, SimaPro, openLCA) and audit the Product System Model (PSM) for broken links or circular references.
- Generic Model Verification: For EPD Tools, we audit the underlying "master model" and report templates to ensure automated outputs remain consistent across various product configurations.
- Methodological Compliance: We check the implementation of allocation rules (e.g., physical vs. economic) and background database mapping (e.g., electricity grid mix) to ensure strict adherence to sector rules like Catena-X or TfS.
Service Comparison Overview
How our quality assurance services compare
| Criteria | Critical Review | Verification | Technical QA |
|---|---|---|---|
| Focus | Methodological conformity | Data reliability & compliance | Data inputs, model architecture & tool logic |
| Best For | Public claims & comparative assertions | B2B data exchange & EPD publication | Pre-audit quality gates & EPD tool developers |
| Output | Critical Review Statement | Verification Statement / Opinion Letter | Technical Audit Report |
| When | Before publication or verification | Before B2B sharing or EPD release | Before calculation or tool rollout |
Our Process
A structured approach ensuring quality and compliance
We begin by understanding your specific needs, target standards, and compliance requirements through a detailed consultation.


Define project scope, timelines, deliverables, and establish clear quality criteria aligned with relevant standards.


Thorough examination of your LCA data, methodology, and model using rigorous quality assurance frameworks.


Detailed report with findings, non-conformities, recommendations, and actionable steps for improvement.


Upon successful resolution of issues, we provide the appropriate statement or certificate for your project.


Continued support for future LCA projects and evolving regulatory requirements.

