Tupperware Review, Is Tupperware Non-Toxic?
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
Across 1 graded product, Tupperware averages Excellent (80/100). On disclosure, the brand says nothing publicly about PFAS. 1 of its products grade Good or better. Grades are model-based estimates, not lab results.
Worth buying from Tupperware Good or better, safest first
Tupperware
Mainstays Food Container Reusable Insulated Stainless Steel
stainless steel interior, insulated construction
Gasket/seal material degradation
Rubber or silicone seals can deteriorate with repeated heating and cooling cycles or age…
Outer plastic shell leachables (if applicable)
If the outer shell or lid is made from polypropylene or other thermoplastic, prolonged…
Reusable insulated stainless steel container, lower PFAS concern.
⚠Risky category by default
Every grade uses the same public rubric. How grades work →