Independent. No paid rankings, ever.
Skip to content
plasticfreehome
A gloved hand holding a clear sample container in a lab

Methodology version 1.0 · published 25 September 2026

How we score, test and decide

Every score on this site follows these published rules. Read them, check our working, and tell us where we're wrong.
  1. 01What we count as plasticThe published definition of plastic that every PlasticFreeHome score, test and PFH Checked decision uses — including silicone, bioplastics, coatings and linings.
  2. 02The three Evidence DialsHow PlasticFreeHome grades the strength of evidence behind every swap and product claim — exposure, environmental impact and claim verification.
  3. 03How Swap Priority worksThe published formula behind PlasticFreeHome's 0–100 Swap Priority score — what goes in, how it is weighted, and a worked example.
  4. 04The PFH Checked standardThe six criteria a product must meet to carry the PFH Checked mark, how testing works, what it costs, and how we keep it independent.
  5. 05Testing protocols and lab routesHow PlasticFreeHome sources, tests and publishes — material identification, release testing, contamination control, lab partners and right of reply.

Independence rules

Nine rules that keep money away from our scores.

Editorial policy

Sources, review, updates and how we use AI.

Corrections log

Every mistake we've fixed, in public.