Product Testing Methodology

Plastic Free Living uses research, product documentation, firsthand use, and—when appropriate—clearly labeled exploratory testing to evaluate products and material claims.

No single method answers every question. This page explains the labels we use, how products are selected, what practical tests can show, and what they cannot.

How We Label Our Work

Hands-on tested

Plastic Free Living obtained and used the product directly. The article should describe the relevant use conditions, observations, and limitations. Hands-on testing can assess matters such as construction, usability, cleaning, durability during the test period, and visible wear. It does not by itself establish chemical composition or long-term health effects.

Research-based comparison

The comparison is based on specifications, documentation, credible outside evidence, and other available reporting. Products may not have been used firsthand. We identify important information that could not be independently verified.

Exploratory laboratory project

A sample was examined using a laboratory or screening method intended to explore a specific question. The article should identify the lab when appropriate, describe the method and sample, report the results carefully, and explain why a limited sample or method should not be generalized beyond what it can support.

Manufacturer-reported

The information comes from the brand, seller, packaging, or product documentation. It is attributed accordingly and is not presented as independent confirmation.

Not fully verified

Available information was incomplete, ambiguous, or inconsistent. We explain what remains uncertain rather than filling the gap with an assumption.

How Products Are Selected

Products may be selected because they are widely used, address a common source of plastic exposure, make a notable material claim, offer a potentially practical alternative, or help answer a reader question. Selection may also consider:

• Relevance to reducing plastic use or exposure.
• Availability and replacement-part access.
• Price and likely useful life.
• Clarity of material and manufacturing information.
• Reader interest and the usefulness of comparing alternatives.
• Whether a product presents an important tradeoff or claim worth investigating.

Verifying Material Claims

We review product pages, packaging, manuals, technical specifications, certifications, and direct manufacturer responses when available. We may also examine components that are easy to overlook, including coatings, lids, seals, gaskets, adhesives, finishes, packaging, and replacement parts.

If “plastic-free” or another broad claim cannot be fully verified, we narrow the statement to what the evidence supports. A stainless-steel body, for example, does not necessarily mean that every component is free of plastic.

Practical Testing

A practical test is designed around the product and the question an article is trying to answer. Depending on the item, observations may include:

• Setup and ease of use.
• Materials, construction, fit, and finish.
• Cleaning and routine maintenance.
• Performance during ordinary use.
• Visible wear, failure points, and replacement needs.
• Packaging and included accessories.

We describe relevant conditions and avoid presenting a short test as proof of long-term durability. When a result is subjective, such as comfort or ease of use, it is reported as an observation or opinion rather than a universal fact.

Using Outside Evidence

Product observations are considered alongside scientific research, public guidance, standards, independent testing, and credible technical references when those sources are relevant. Evidence is matched to the claim it can support. Findings about one material, use condition, or sample are not automatically extended to every product in a category.

Laboratory Projects

When a project involves outside laboratory work or analytical screening, we aim to report:

• Who performed the work and any relevant relationship.
• What sample or product was tested.
• The question, method, and conditions.
• The result and units, where applicable.
• Important detection, sampling, and interpretation limits.
• Why the finding may not represent every unit, batch, use pattern, or competing product.

Exploratory results can generate useful questions, but a limited project is not described as a controlled clinical study, a comprehensive safety assessment, or proof of a universal outcome.

Recommendations

A recommendation considers more than a single material claim. We may weigh construction, verified components, expected exposure, usefulness, durability, maintenance, price, availability, replacement needs, and tradeoffs. The “best” option depends on the reader’s priorities, so articles should explain who a product may suit and why.

Product Sources and Disclosures

• Products may be purchased by Plastic Free Living, supplied by a company, borrowed, or otherwise obtained.
• How a product was obtained should be disclosed when it could matter to a reader’s assessment.
• Brands do not receive a promise of positive coverage.
• Affiliate links or sponsorships should be disclosed where relevant.
• A company may be asked to verify a factual detail, but it does not control the final conclusion.

Updates and Retesting

Products, formulations, suppliers, and documentation can change. We update an article when we learn of a material change or find better evidence. Retesting is considered when a change could affect the article’s conclusions, but not every product can be retested on a fixed schedule.

Questions about a method or result can be sent through the contact page. Our broader sourcing, disclosure, and correction practices are described in the Editorial Standards.