# Third-Party Verification for CPG Claims: A Buyer’s Guide

> The Wellness Quality Institute helps you verify CPG claims. Match your claim to the right program and start your plastic-free due diligence today.

**Published:** 2026-10-16 | **Updated:** 2026-10-31 | **Author:** mihir
**URL:** https://www.wellnessqualityinstitute.com/articles/third-party-verification-cpg-claims
**Type:** post

**Categories:** Certification

![Third-Party Verification for CPG Claims: A Buyer’s Guide](https://wellnessquality.sites.aigrowthagent.co/wp-content/uploads/sites/93/2026/10/1792061629471-fde9261548f9-1024x572.webp)

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## Content

*Written by: Scott Steveson, Specialist, Wellness Quality Institute*

## Key Takeaways

- Third-party verification is an independent review of evidence against a published standard. It differs from certification, self-reported lab results, and raw data.
- Choosing the right verification program depends on claim type. Evidence requirements vary across organic, non-GMO, gluten-free, supplement, animal welfare, and sustainability claims.
- Strong verification programs define scope clearly and set firm evidence requirements. They also protect independence, publish standards, rely on accredited labs, align with regulations, stay transparent, and require re-verification.
- Plastic and microplastic content claims are uniquely difficult. Current validated testing methods cannot prove absence across all particle sizes and polymer types.
- The Wellness Quality Institute operates Plastic-Free Pathway Verification so brands can substantiate plastic-related claims within clear, defensible scopes.

[Learn More About Plastic-Free Pathway Verification](https://www.wellnessqualityinstitute.com/?utm_term=third-party-verification-cpg-claims&utm_campaign=ai_growth_agent)

## What Third-Party Verification Means For CPG Claims

Third-party verification and certification sound similar, yet they describe different things. That difference matters before a company chooses a program.

**Verification** is an independent review of a company’s evidence against a published standard. A third party with no commercial interest in the outcome examines the data, methodology, and controls. It then issues a finding that stays inside what the evidence actually supports. The finding is always bounded by the scope of the review.

**Certification** usually signals an ongoing, guaranteed status. A product is certified organic or certified gluten-free below a defined threshold. Certification programs combine testing, auditing, and ongoing surveillance to maintain that guarantee over time.

**Self-reported lab results** sit in a different category. When a company publishes its own test data, or a supplier’s, and asks the market to trust it, readers treat that as marketing. The company grading its own homework has a clear interest in the grade, even when the testing itself was rigorous. That structural conflict is why self-reported results carry less weight than independently reviewed data, even when the numbers match.

**A raw lab report** is evidence for a claim, not a claim. It still needs interpretation, scope definition, and independent review before it can support a defensible market statement. A report reading “no microplastics detected” means none were found above that instrument’s detection floor, for the polymers it screened, in the lot it tested. It does not mean none are present.

The practical hierarchy, from weakest to strongest, runs: brand or manufacturer testing, independent laboratory testing, claim-specific verification, and certification against a published standard with ongoing oversight, as described in research on evidence tiers in supplement claim substantiation.

The phrase “third-party tested” only guarantees that a laboratory not owned by the brand analyzed the product at some point. It does not state what was tested, when, how often, on which lots, by what method, or against what limits. A named, searchable verification or certification is materially stronger because buyers can check the exact product, scope, and status independently.

[A 2026 Harvard audit of 827 FTC-jurisdictional environmental marketing claims found that third-party certifications and seals achieved a 90% compliance rate with FTC Green Guides criteria, compared to substantially lower rates for self-attested claim types](https://dash.harvard.edu/entities/publication/7fe2e0e4-1428-4a4f-a438-f84007558ff6). This provides direct empirical evidence that independent verification improves claim accuracy.

[How to Prevent Greenwashing with Verified Plastic Claims](https://www.wellnessqualityinstitute.com/articles/water-quality-month-greenwashing-prevention/?utm_term=third-party-verification-cpg-claims&utm_campaign=ai_growth_agent) covers the legal and reputational exposure that follows when claims outpace the evidence behind them. With that distinction in hand, the next step is practical: deciding which type of program fits the claim a brand wants to make.

[Turn Real Lab Data Into a Claim You Can Support](https://www.wellnessqualityinstitute.com/?utm_term=third-party-verification-cpg-claims&utm_campaign=ai_growth_agent)

## How To Match Your Claim Type To The Right Verification Program

The right program depends on the claim, not the logo. The table below shows how evidence requirements and permitted claim language shift across six common claim categories. No single program type covers more than one category, which is why choosing a provider before defining the claim often leads to mismatched verification.

| Claim Category | Program Type | Evidence Typically Required |
| --- | --- | --- |
| Organic | USDA National Organic Program certification, issued by an accredited certifying agent | Annual inspection, certified ingredient sourcing, and controls that exclude synthetic pesticides, fertilizers, GMOs, and irradiation, plus a traceable supply chain. A product labeled “Organic” must contain at least 95% certified organic ingredients. “100% Organic” requires every ingredient to be certified. |
| Non-GMO | Independent non-GMO verification programs | Supply-chain traceability, ingredient risk classification, supplier documentation, and testing where the risk profile requires it. The verified claim is “non-GMO,” not “GMO-free,” because no review can honestly support an absolute statement. |
| Gluten-Free | Independent gluten-free certification programs | Ingredient specifications showing no gluten-containing sources, controls against cross-contact, and finished-product testing where risk warrants it. The FDA threshold for gluten-free claims is less than 20 parts per million under 21 CFR 101.91; certification verifies the brand’s evidence against that number. |
| Supplement / Anti-Doping | Finished-product certification programs combining lot testing, label-claim review, contaminant screening, and GMP audits | ISO/IEC 17025-accredited laboratory testing, identity and potency results, contaminant screens, production-lot records, and manufacturing-quality documentation. Programs designed for anti-doping purposes test every production lot for substances on the WADA Prohibited List and include a GMP compliance audit. |
| Animal Welfare | Farm-level audit programs with published species- and system-specific standards | On-farm audits against published welfare criteria covering space, handling, enrichment, transport, and slaughter. Animal-welfare certification programs are private standards whose meaning depends on species, production system, standard version, and verification method, and should not be treated as interchangeable. The specific tier or step level within a program is the substantive claim, not the program name alone. |
| Sustainability | Scope-specific third-party programs (facility-level waste diversion, supply-chain labor, carbon, recyclability) | Evidence varies by scope. Facility audits support waste-diversion claims. Supply-chain transaction records and social audits support fair-trade and labor claims. Independently verified emissions data supports carbon claims. “Sustainable” has no legal definition in US food law; the FTC reviewed the term and declined to define it, leaving brands responsible for substantiating whatever specific attribute they claim. |

A clear pattern runs across every category: the permitted claim language is bounded by the program’s scope. Certification does not establish that a product is effective or universally safe; it establishes conformance to the specific program requirements reviewed. A gluten-free certification does not authorize a non-GMO claim. An animal-welfare certification does not authorize an organic claim. Scope determines language.

## How To Evaluate A Third-Party Verification Provider

CPG claim substantiation depends on the quality of the program behind the claim, not just the presence of a logo. The checklist below applies to third-party verification for sustainability claims and other CPG claim categories.

**Scope.** Start by asking what the program actually reviews. A program that certifies an entire product line is making a broader claim than one that certifies a specific SKU, production lot, and tested parameter range. Because a claim can only be as specific as the review behind it, scope determines what the resulting claim can say.

**Evidence requirements.** Ask what the program requires the brand to submit. Supplier declarations, finished-product testing, facility audits, chain-of-custody documentation, and blank controls are all different evidence types. A program that accepts self-reported data without independent review is structurally weaker than one that requires independently generated data reviewed against published criteria.

**Independence.** Check whether the program has a commercial interest in the outcome. A program that also sells testing services, consulting, or laboratory access carries a structural conflict. Independence means the reviewer has no stake in the result and earns the same either way.

**Published standard.** Confirm that the standard is publicly available. A program whose criteria are not published cannot be independently evaluated by buyers, journalists, or regulators. Published criteria are the foundation of a checkable claim.

**Laboratory accreditation.** [ISO/IEC 17025:2017](https://iso.org/standard/66912.html) is the international standard for the competence of testing and calibration laboratories. It is the accreditation basis on which a laboratory’s technical capability is assessed. A program that accepts results from non-accredited laboratories is accepting data of unknown reliability.

**Regulatory grounding.** For environmental marketing claims, the [FTC Green Guides (16 CFR Part 260)](https://morganlewis.com/pubs/2026/05/breaking-down-plastics-as-state-regulation-expands-and-litigation-evolves) are the primary federal reference for what counts as a substantiated environmental claim in the US. The Guides caution against broad, unqualified environmental benefit claims and require that qualifications be clear, specific, and prominent. FTC consent decrees involving unsubstantiated environmental marketing, particularly around “carbon neutral,” “biodegradable,” and unqualified recyclability claims, have increased noticeably since 2020.

**Transparency.** Look for a public registry or database of verified products that anyone can check. A claim that cannot be independently verified by a buyer, retailer, or journalist rests entirely on the brand’s word.

**Maintenance and re-verification.** Ask whether the program requires ongoing compliance or treats verification as a one-time badge. Lot-to-lot variability, ingredient changes, and production shifts mean that a result from two years ago may not reflect current production. Programs with defined re-verification periods produce claims that still mean something when a customer checks them.

[Turn Plastic Lab Data into Registry-Backed CPG Claims](https://www.wellnessqualityinstitute.com/articles/third-party-verification-cpg-suppliers/?utm_term=third-party-verification-cpg-claims&utm_campaign=ai_growth_agent) applies this framework specifically to plastic and microplastic content claims.

## How To Verify Plastic And Microplastic Content Claims

The plastic and material-content claim category currently lacks an incumbent verification landscape. It is also the category where the gap between what brands want to say and what the science can support is widest. To see why, it helps to look at the specific claims brands want to make and the measurement limits that block them.

**Why “plastic-free” and “microplastic-free” claims cannot currently be substantiated.** The core issue lies in measurement limits rather than diligence. California’s drinking-water microplastics definition, the most stringent public reference available, defines microplastics as solid polymeric material with particles having at least three dimensions greater than 1 nanometer and less than 5,000 micrometers. That definition is deliberately broad. The best validated analytical methods available today begin at 20 micrometers for Raman spectroscopy under the [California State Water Board’s SWB-MP2-rev1 method](https://www.waterboards.ca.gov/drinking_water/certlic/drinkingwater/microplastics.html) or 50 micrometers for infrared spectroscopy under [SWB-MP1-rev1](https://www.waterboards.ca.gov/drinking_water/certlic/drinkingwater/microplastics.html), and both extend to 5,000 micrometers. The 1–20 µm fraction is not validated under either method. Everything below 1 micrometer, the nanoplastic range, currently sits beyond reliable commercial measurement.

The California definition reaches down to 1 nanometer. The best validated methods start at 20 or 50 micrometers, which are thousands of times larger. That gap reflects a hard technical limit rather than a lack of effort.

**Detection can establish presence. It cannot establish absence.** Finding a particle is comparatively straightforward: isolate it, confirm chemically that it is a polymer, and report it. Proving that no plastic is present is a fundamentally different and far harder claim. It requires ruling out everything the method cannot see: every particle below the detection floor, every polymer outside the tested panel, and every production lot that was not sampled.

This is why both of the following can be true at the same time. Research can credibly report that most tested water samples contain microplastics, and no laboratory can credibly certify that any product is free of them. [A peer-reviewed 2018 study by Kosuth, Mason, and Wattenberg in PLOS ONE found anthropogenic particles in 81% of 159 tap water samples sourced across five continents](https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0194970). A [separate 2018 study led by Sherri Mason at the State University of New York at Fredonia, published in Frontiers in Chemistry, found contamination in 93% of 259 bottled water samples across eleven brands](https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2018.00407/full), with [polypropylene, the material used in bottle caps, as the most common polymer identified](https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2018.00407/full). The [World Health Organization’s 2019 assessment, Microplastics in Drinking-Water](https://www.who.int/publications/i/item/9789241516198), remains the clearest statement of where the evidence stands: low concern on limited evidence, with more research urgently needed.

![Fragments of plastic suspended in blue water below the surface.](https://cdn.aigrowthmarketer.co/1784829388732-c6255482b477.webp)**Plastic doesn’t disappear — it fragments. These secondary microplastics are the breakdown products of everyday objects, and independent research now detects them across the water supply. Detection, though, establishes presence, not absence.**

**How The Wellness Quality Institute Reviews Plastic Claims**

The Wellness Quality Institute (WQI) operates an independent review program for plastic and microplastic content claims because no incumbent program currently addresses this category. Its core program, Plastic-Free Pathway Verification (PFPV), is governed by the standard WQI-CS-01. The review examines a company’s existing independent laboratory dataset, testing methodology, product scope, and supporting controls against defined criteria focused on particle size and polymer type. These criteria align with the California State Water Board’s drinking-water microplastics reference framework.

![Scientists in white coats working with samples and microscopes in a laboratory.](https://cdn.aigrowthmarketer.co/1784829434095-0fc8fbcf29fa.webp)**Only a small number of laboratories can genuinely test for microplastics, and capability varies by instrument and method. WQI reviews a company’s existing third-party laboratory data against a defined standard — it does not run the tests itself.**

WQI does not run laboratory tests and does not certify that any product is free of plastic. Phase 1 focuses on water and suitable simple-liquid products, where testing methods are most defensible. Verification is available to US companies nationally. The California framework serves as a technical reference point rather than a geographic boundary. California has created, approved, authorized, and endorsed multiple private verification programs, including CDPH approval of private nonprofit accrediting organizations for clinical laboratories, [CARB’s accreditation program for third-party greenhouse gas and LCFS verifiers](https://ww2.arb.ca.gov/verification), and the Insurance Commissioner’s approval of the Universal Claims Certification program for independent insurance adjusters. As stated earlier, California did not create, approve, authorize, or endorse WQI or its standard, and alignment with the California framework is not approval by California.

Every review produces one of two outcomes:

- **Standard Met** carries a verification decision, a scope-locked license to use the WQI logo, a public registry listing, and approved claim language.
- **Standard Not Met** is a private outcome that can be resubmitted with updated information and is never described as a failed product.

Beyond the outcome itself, the verification is locked to the reviewed product, dataset, tested particle-size range, polymer panel, and production period. No company-wide or product-line claim may be extended from a single dataset. A single assessment fee covers review, verification decision, and registry listing, with no separate mark-license or registry fee. Independent laboratory testing is arranged and billed separately by a qualified independent laboratory. The verification period is 24 months from the sampling date of the most recent accepted dataset.

*WQI Plastic-Free Pathway Verification does not certify that a product contains zero plastic, microplastics, or nanoplastics. It shows that the company is on a verified pathway toward plastic-free standards. Verification applies only to the reviewed products, submitted datasets, tested ranges, polymer panels, production or sampling periods, and supporting controls. WQI verification is not a California approval, government certification, or health or safety certification.*

[Microplastics Testing Methodology & Verification Standards](https://www.wellnessqualityinstitute.com/articles/microplastics-testing-methodology-standards/?utm_term=third-party-verification-cpg-claims&utm_campaign=ai_growth_agent) covers the analytical methods and their validated ranges in technical depth.

[Talk to WQI About Plastic-Free Pathway Verification](https://www.wellnessqualityinstitute.com/?utm_term=third-party-verification-cpg-claims&utm_campaign=ai_growth_agent)

## What A Lab Report Can And Cannot Prove

A laboratory report is evidence for a claim, not a claim. That distinction matters in a category where “none detected” is often misread as “none present.”

**Detection floors.** Every analytical method has a lower size limit below which it cannot identify particles. Micro-FTIR (Fourier transform infrared spectroscopy) has a practical particle-identification floor of approximately 10 micrometers. Micro-Raman can identify particles at approximately 0.5–1 micrometer under suitable conditions, although fluorescence from pigments and organic matter can interfere with analysis. As noted earlier, the California-validated methods begin at 20 µm and 50 µm, so anything smaller falls outside their validated scope.

![Colorful plastic fragments in water inside a laboratory petri dish.](https://cdn.aigrowthmarketer.co/1784829410323-fb401fc7b1e4.webp)**Microplastics are particles smaller than five millimeters. Current methods can count and identify them at the upper end of that range, but reliable measurement falls away as particles get smaller — a limit that shapes every honest claim.**

**Polymer panel.** No single test screens every polymer type. A report covers the polymers the laboratory was instructed to look for, using the method selected for the matrix. Polymers outside the tested panel sit outside the finding.

**Lot coverage.** A result reflects the production lot that was sampled. Lot-to-lot variability means a clean result on one batch does not guarantee the next.

**“None detected” is a bounded statement.** A lab report reading “no microplastics detected” means none were found above that instrument’s detection floor, for the polymers it screened, in the lot it tested. It does not mean none are present. Any laboratory worth using will state its limit of detection on the report. A report that does not state its detection floor is incomplete.

**Comparing results.** Two results from different laboratories are not directly comparable unless both state the same method and the same size cut-off. A lab counting from 1 µm will always report more particles than one counting from 10 µm, even when testing the identical bottle. This is why published bottled water particle counts range across orders of magnitude. Method variation sits inside the number.

A lab report alone does not become a defensible market claim. Self-reported results carry less weight than independently reviewed data, and without independent review, even rigorous data reads as marketing. Independent review exists to close the gap between a real result and a claim a company can stand behind.

[Microplastics Claim Verification: What Lab Data Can Prove](https://www.wellnessqualityinstitute.com/articles/microplastics-claim-verification-data/?utm_term=third-party-verification-cpg-claims&utm_campaign=ai_growth_agent) and [What Microplastics Testing Proves and Where It Stops](https://www.wellnessqualityinstitute.com/articles/what-microplastics-testing-proves/?utm_term=third-party-verification-cpg-claims&utm_campaign=ai_growth_agent) provide technical depth on detection limits and what findings can and cannot support.

## What Brands May Say After Verification

The post-verification question, what a brand may actually say once a review is complete, rarely receives clear guidance. For the Wellness Quality Institute’s Plastic-Free Pathway Verification, the answer is governed by WQI-CS-01 and WQI-TM-01 and is specific.

**Scope lock.** Verification applies only to the reviewed product, model or SKU, product matrix, production or sampling period, tested particle-size range, polymer panel, and analytical method. No company-wide or product-line claim may be extended from a single dataset. A single product’s result remains a single product’s result.

**Registry requirement.** Every public verification claim must include or link to the registry ID. The public registry entry records the verified party, product scope, matrix, production or sampling period, tested particle-size range, lower method limit, polymer panel, reporting limits, testing laboratory and its accreditation reference, verification and expiration dates, registry ID, approved result statement, and current status. This structure turns the claim into something checkable rather than merely assertable.

Once a product meets the standard, the scope lock and registry requirement together define exactly what the brand may say. The following phrases are permitted for Standard Met products because each one accurately reflects what the review established.

**Permitted claim language for Standard Met products:**

- “Reviewed and accepted under WQI’s Plastic-Free Pathway Verification standard”
- “WQI Plastic-Free Pathway Verified” for Standard Met products, within registered scope
- “Dataset reviewed against a standard aligned with the California State Water Board’s drinking-water microplastics reference framework”
- “Verified against WQI’s defined review criteria”

Other phrases are prohibited because they overstate what the evidence can support or misstate the nature of the program.

**Prohibited claims:**

- “Plastic-free” as a product claim
- “Microplastic-free,” “nanoplastic-free,” or “zero plastic”
- “Certified” or “certification” in connection with WQI verification
- Any California approval or endorsement claim
- Any government approval or endorsement claim
- Any claim implying WQI performed the laboratory testing
- Any claim extending beyond the registered scope, including any company-wide or product-line claim supported by a single dataset

The central distinction in the program is simple. A product is not “plastic-free.” A company is on a verified pathway toward plastic-free standards. “Plastic-Free Pathway Verified” must not be compressed into “plastic-free verified” or “verified plastic-free.” The word “pathway” is required and must not be dropped for brevity. Those compressed phrasings count as prohibited claims.

## The Self-Reported-Data Problem

The most common alternative to independent verification is a company relying on self-reported lab results and internal interpretation. The company publishes its own test data, or a supplier’s, and asks the market to trust it.

This is the true competitive set for any verification program, and naming it clearly matters. The problem is that a raw lab report carries a number but not the review needed to say what that number means, and no independent party is willing to stand behind the interpretation. An internal “we tested it” claim reads as marketing for the same reason discussed earlier: the company grading its own homework has an obvious interest in the grade. Silence becomes the third option. Many brands with genuine data say nothing because their legal teams cannot approve a claim they cannot defend.

Against each of these options, an independent third party with no stake in the outcome and no role in the testing reviews the data against a published standard and issues language that stays inside what the evidence supports. That is what separates a claim a company merely asserts from one it can actually substantiate.

[Claims such as “healthy,” “natural,” “pure,” “plastic free,” and “BPA free” can all become focal points of greenwashing and microplastics class actions if plaintiffs argue the product exposes consumers to synthetic contaminants](https://chemicalprocessing.com/environmental-protection/article/55376160/plastics-industry-faces-rising-tide-of-litigation-regulation-and-reputational-risk), and [US plastics and microplastics litigation has grown exponentially since around 2018, with estimated filings approaching 95 cases annually by 2025](https://chemicalprocessing.com/environmental-protection/article/55376160/plastics-industry-faces-rising-tide-of-litigation-regulation-and-reputational-risk). The legal exposure from an unverifiable plastic claim is real and growing. A defensible claim is therefore more valuable.

[Turn Real Lab Data Into a Claim You Can Support](https://www.wellnessqualityinstitute.com/?utm_term=third-party-verification-cpg-claims&utm_campaign=ai_growth_agent)

## Frequently Asked Questions

### How Does Third-Party Verification Differ From Certification For CPG Claims?

As covered earlier, verification is an independent review against a published standard, while certification implies an ongoing guaranteed status. Verification describes what actually happened during a defined review. Certification signals that the product continues to meet a defined threshold over time. In categories where the science cannot support an absolute guarantee, verification becomes the more honest and defensible framing.

### What Does A Lab Report Actually Prove?

A lab report proves what a specific analytical method found in a specific sample, on a specific date, for the parameters the laboratory was instructed to measure. It does not prove that the same result would appear in a different lot, using a different method, or for parameters outside the tested scope. A report is evidence for a claim, not a claim itself. Interpreting what a result means, whether the method fit the matrix, whether the detection limits were adequate, and what claim language the data can support all require review beyond the report.

### What Does “None Detected” Mean On A Microplastics Lab Report?

As explained earlier, “none detected” is a bounded statement: none found above the detection floor, for the screened polymers, in the tested lot. It does not mean none are present. A method that begins at 50 micrometers cannot see anything smaller, so “none detected” can coexist with particles below that size. The finding is meaningful within its scope but does not guarantee absence. Any laboratory worth using will state its detection floor on the report, and a report that omits it is incomplete evidence.

### Is The California Framework A Geographic Requirement?

The California State Water Board’s drinking-water microplastics framework, including its regulatory definition and the two published analytical methods SWB-MP1-rev1 and SWB-MP2-rev1, serves as a technical reference point rather than a geographic boundary. It is the most stringent credible public reference available for microplastics testing today, which is why organizations that want to anchor their criteria to a defensible external standard use it. California has created, approved, authorized, and endorsed multiple private verification programs, including CDPH approval of private nonprofit accrediting organizations for clinical laboratories, [CARB’s accreditation program for third-party greenhouse gas and LCFS verifiers](https://ww2.arb.ca.gov/verification), and the Insurance Commissioner’s approval of the Universal Claims Certification program for independent insurance adjusters. As stated earlier, California did not create, approve, authorize, or endorse WQI or its standard, and alignment with the California framework is not approval by California. Verification programs using this framework as a technical anchor are available to companies nationally, not only in California.

### What Do “Plastic-Free” And “Microplastic-Free” Claims Actually Mean Today?

In practice, these claims promise more than current science can support. No laboratory today can confirm the complete absence of plastic across every particle size, polymer type, and production lot. The best validated analytical methods begin at 20 or 50 micrometers, while the California regulatory definition reaches down to 1 nanometer. Everything in that gap remains beyond reliable commercial measurement. A “plastic-free” claim is therefore a claim the science cannot currently carry. What can be verified is a reviewed dataset, within a defined scope, supporting a claim about what was found or not found above a stated detection floor, for a defined polymer panel, in a specific production period. That is a meaningful and defensible claim.

### What Happens If A Product Does Not Meet The Standard?

In the Wellness Quality Institute’s Plastic-Free Pathway Verification program, a Standard Not Met outcome is private. It carries no public claim, no logo rights, and no registry listing. It is never described as a failed product and often reflects insufficient data, an unsupported analytical method, inadequate contamination controls, or incomplete scope rather than a product defect. The company may submit corrected or additional information for future review. The program is designed so a company can engage honestly with the review without creating a new public problem.

### How Long Does Verification Last?

The Wellness Quality Institute’s verification period is 24 months from the sampling date of the most recent accepted dataset. Continued claim use after expiration requires re-verification using current data. Expired registry entries remain publicly visible and marked “Expired,” so the record stays honest over time rather than disappearing. This reflects the reality of lot-to-lot variability. A result reflects the production it was drawn from, not production forever. A time-limited verification is what lets the mark still mean something when a customer checks it.

## Conclusion: Practical Next Steps For Due Diligence

The key distinctions in this guide are also the ones most often blurred in the market. Third-party verification is an independent review of evidence against a published standard. It differs from certification, self-reported results, and raw lab reports. The right program starts with the claim type. Evidence requirements, permitted claim language, and the scope of what a program actually reviews differ substantially across categories.

For plastic and material-content claims, current science cannot support a verified “plastic-free” product claim. What can be verified is a reviewed dataset, within a defined scope, supporting a claim a company can substantiate. Detection can establish presence, yet it cannot establish absence. A lab report reading “none detected” is a bounded statement about an instrument and method, not a clean bill of health for a product.

For further due diligence, the primary sources that anchor this category are the [California State Water Board’s drinking-water microplastics framework](https://www.waterboards.ca.gov/drinking_water/certlic/drinkingwater/microplastics.html), including SWB-MP1-rev1 and SWB-MP2-rev1; [ISO/IEC 17025:2017](https://www.iso.org/standard/66912.html) for laboratory accreditation; and the [FTC Green Guides (16 CFR Part 260)](https://www.ecfr.gov/current/title-16/chapter-I/subchapter-B/part-260).

## Read Next

- [Turn Plastic Lab Data into Registry-Backed CPG Claims](https://www.wellnessqualityinstitute.com/articles/third-party-verification-cpg-suppliers/?utm_term=third-party-verification-cpg-claims&utm_campaign=ai_growth_agent)
- [How To Verify Supplier Environmental Claims: A Guide](https://www.wellnessqualityinstitute.com/articles/third-party-claims-validation-suppliers/?utm_term=third-party-verification-cpg-claims&utm_campaign=ai_growth_agent)
- [Plastic Claim Verification Programs: A Brand Guide](https://www.wellnessqualityinstitute.com/articles/plastic-claim-verification-program/?utm_term=third-party-verification-cpg-claims&utm_campaign=ai_growth_agent)
- [Retail Sustainability Claim Verification Programs Explained](https://www.wellnessqualityinstitute.com/articles/retail-sustainability-claim-verification-programs/?utm_term=third-party-verification-cpg-claims&utm_campaign=ai_growth_agent)
- [Third-Party Verification for Plastic Reduction Claims](https://www.wellnessqualityinstitute.com/articles/third-party-verification-plastic-reduction/?utm_term=third-party-verification-cpg-claims&utm_campaign=ai_growth_agent)

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      - **Text:** As explained earlier, none detected is a bounded statement: none found above the detection floor, for the screened polymers, in the tested lot. It does not mean none are present. A method that begins at 50 micrometers cannot see anything smaller, so none detected can coexist with particles below that size. The finding is meaningful within its scope but does not guarantee absence. Any laboratory worth using will state its detection floor on the report, and a report that omits it is incomplete evidence.
    **Question:**

    - **Name:** Is The California Framework A Geographic Requirement?
      **Answer:**

      - **Text:** The California State Water Boards drinking-water microplastics framework, including its regulatory definition and the two published analytical methods SWB-MP1-rev1 and SWB-MP2-rev1, serves as a technical reference point rather than a geographic boundary. It is the most stringent credible public reference available for microplastics testing today, which is why organizations that want to anchor their criteria to a defensible external standard use it. California has created, approved, authorized, and endorsed multiple private verification programs, including CDPH approval of private nonprofit accrediting organizations for clinical laboratories, CARBs accreditation program for third-party greenhouse gas and LCFS verifiers, and the Insurance Commissioners approval of the Universal Claims Certification program for independent insurance adjusters. As stated earlier, California did not create, approve, authorize, or endorse WQI or its standard, and alignment with the California framework is not approval by California. Verification programs using this framework as a technical anchor are available to companies nationally, not only in California.
    **Question:**

    - **Name:** What Do Plastic-Free And Microplastic-Free Claims Actually Mean Today?
      **Answer:**

      - **Text:** In practice, these claims promise more than current science can support. No laboratory today can confirm the complete absence of plastic across every particle size, polymer type, and production lot. The best validated analytical methods begin at 20 or 50 micrometers, while the California regulatory definition reaches down to 1 nanometer. Everything in that gap remains beyond reliable commercial measurement. A plastic-free claim is therefore a claim the science cannot currently carry. What can be verified is a reviewed dataset, within a defined scope, supporting a claim about what was found or not found above a stated detection floor, for a defined polymer panel, in a specific production period. That is a meaningful and defensible claim.
    **Question:**

    - **Name:** What Happens If A Product Does Not Meet The Standard?
      **Answer:**

      - **Text:** In the Wellness Quality Institutes Plastic-Free Pathway Verification program, a Standard Not Met outcome is private. It carries no public claim, no logo rights, and no registry listing. It is never described as a failed product and often reflects insufficient data, an unsupported analytical method, inadequate contamination controls, or incomplete scope rather than a product defect. The company may submit corrected or additional information for future review. The program is designed so a company can engage honestly with the review without creating a new public problem.
    **Question:**

    - **Name:** How Long Does Verification Last?
      **Answer:**

      - **Text:** The Wellness Quality Institutes verification period is 24 months from the sampling date of the most recent accepted dataset. Continued claim use after expiration requires re-verification using current data. Expired registry entries remain publicly visible and marked Expired, so the record stays honest over time rather than disappearing. This reflects the reality of lot-to-lot variability. A result reflects the production it was drawn from, not production forever. A time-limited verification is what lets the mark still mean something when a customer checks it.

  **BlogPosting:**

  - **Headline:** Third-Party Verification for CPG Claims: A Buyer's Guide
  - **Description:** The Wellness Quality Institute helps you verify CPG claims. Match your claim to the right program and start your plastic-free due diligence today.
  - **DateModified:** 2026-10-15T10:53:21.362Z
  - **Image:** https://cdn.aigrowthmarketer.co/1784829388732-c6255482b477.webp, https://cdn.aigrowthmarketer.co/1784829434095-0fc8fbcf29fa.webp, https://cdn.aigrowthmarketer.co/1784829410323-fb401fc7b1e4.webp
  - **InLanguage:** en-US
    **Person:**

    - **Name:** Scott Steveson
    - **JobTitle:** Specialist
    - **Description:** Scott Stevenson is part of the Wellness Quality Institute team, where he supports WQI’s work to advance product transparency, credible verification, and greater consumer trust. His background spans ethics and compliance, corporate trust, and responsible business, including experience with Ethisphere Institute and global companies navigating evolving standards and stakeholder expectations.
      **Organization:**

      - **Name:** Wellness Quality Institute
      - **Url:** https://www.wellnessqualityinstitute.com/
    **Organization:**

    - **Name:** The Wellness Quality Institute
    - **Url:** https://wellnessqualityinstitute.com


---

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## Citations

- [How To Verify Plastic Contamination In Protein Powder](https://www.wellnessqualityinstitute.com/articles/verify-protein-powder-plastic-contamination)
- [Plastic Claim Substantiation: Evidence Before You Claim](https://www.wellnessqualityinstitute.com/articles/plastic-claim-substantiation-evidence-requirements)
- [How To Make Plastic Reduction Claims That Hold Up](https://www.wellnessqualityinstitute.com/articles/substantiate-clean-label-plastic-reduction)
- [Plastic Claim Substantiation: A US Compliance Guide](https://www.wellnessqualityinstitute.com/articles/plastic-claim-substantiation-compliance-guide)
- [Microplastics Verification Standards: A Complete Guide](https://www.wellnessqualityinstitute.com/articles/microplastics-verification-standards-guide)

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