MPFREE

Frequently Asked Questions

Organized by audience. For the full explainer behind any answer, see the Knowledge Base.

General

Understanding the Science

For Businesses: The Certification Process

For Consumers: Verifying a Product

Governance & Trust

Sources cited above

  1. [1] ISO 24187:2023. "Principles for the analysis of microplastics present in the environment." International Organization for Standardization. View source →
  2. [2] World Health Organization (2019). "Microplastics in Drinking-Water." View source →
  3. [3] U.S. Federal Trade Commission. 16 CFR § 260.9, "Free-of claims," Guides for the Use of Environmental Marketing Claims. View source →
  4. [4] Latham & Watkins (2025). "European Commission Announces Intention to Withdraw EU Green Claims Directive Proposal, Although the Status Remains Unclear." View source →
  5. [5] California Senate Bill 1422 (2018), "California Safe Drinking Water Act: microplastics," and the State Water Resources Control Board's 2022 policy handbook implementing it. View source →
  6. [6] ISO/IEC 17025:2017. "General requirements for the competence of testing and calibration laboratories." View source →
  7. [7] ISO/IEC 17065:2012. "Conformity assessment — Requirements for bodies certifying products, processes and services." View source →