Member's Mark Review, Is Member's Mark Non-Toxic?
Across 7 graded products, Member's Mark averages Poor (31/100). 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.
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.
Worth buying from Member's Mark Good or better, best-graded first
Member's Mark
Heavy Duty Food Service Foil
Aluminum foil
Aluminum leaching from acidic foods
Aluminum foil shows lower concern for typical use, though prolonged contact with acidic…
Lower risk. Plain aluminum foil typically does not contain PFAS.
⚠Starting grade for this product type
Graded and flagged Poor and Bad, we’d swap these
Member's Mark
Unbleached Parchment Paper 205 sq. ft. 2 pk.
Unbleached paper with silicone coating
Silicone coating degradation over time and heat
Silicone coatings can degrade if exposed to prolonged heat above manufacturer specs or if…
Likely lower risk, but Sam's Club provides no PFAS disclosure.
⚠Waterproof or stain-proof treatment
Member's Mark
Foil Sheets 9" x 10.75" 500 ct.
aluminum foil with grease-resistant coating
Aluminum leaching (acidic food contact)
Aluminum foil can release small amounts of aluminum into acidic or salty foods over…
Grease-resistant coating composition (undisclosed)
The proprietary grease-resistant layer is not identified on packaging or public…
Coating degradation and flaking
Low-cost foil coatings can flake or peel if foil is folded repeatedly or exposed to…
Standard foil with grease coating.
⚠Waterproof or stain-proof treatment
Member's Mark
Unbleached Parchment Paper 205 sq. ft. 2 pk.
Unbleached paper with silicone or wax coating
Silicone coating stability at heat
Standard silicone coatings on parchment are stable below 420F but may begin releasing…
Unbleached parchment typically lower concern, coating details not disclosed.
⚠Waterproof or stain-proof treatment
Member's Mark
Foodservice Film (12" X 3,000')
Polyethylene film, likely with grease-resistant coating
Grease-resistant coating composition (undisclosed)
Sam's Club does not publicly identify the grease-resistant additive. Fluorochemical…
Polyethylene film degradation over time
PE film can become brittle and fragment when exposed to heat, light, or prolonged…
Migration of coating additives under heat or fatty contact
If the coating contains fluorochemicals or other lipophilic additives, prolonged contact…
Grease-resistant food wrap.
⚠Waterproof or stain-proof treatment
Member's Mark
Unbleached Parchment Paper 410 sq. ft
unbleached paper with grease-resistant coating
Coating degradation and particulate shedding
Unbleached parchment with undisclosed coating composition may shed microscopic particles…
Thermal decomposition of coating at high heat
If coating includes proprietary synthetics or low-grade polymers, exposure to…
Microplastic/microparticle ingestion from degraded paper
Unbleached paper fibers can migrate into fatty or acidic foods (oils, vinegars, acidic…
Unknown synthetic additives in coating
Katom/Sam's Club does not publish coating chemical inventory. Unbleached parchment from…
Parchment paper typically uses silicone or wax; coating chemistry unclear.
⚠Waterproof or stain-proof treatment
Member's Mark
Unbleached Parchment Paper 205 sq. ft. 2 pk.
unbleached paper with silicone coating
Silicone coating migration at high heat
Silicone is stable at standard baking temperatures (up to 420F); however, prolonged…
Paper pulp contaminants and mold if stored damp
Kraft paper can absorb moisture and support mold growth if stored in humid conditions.…
Coating degradation and flaking over repeated heating
All silicone-coated parchments degrade with age and reuse. Visible flaking or brittleness…
Lower-concern choice; unbleached plus silicone is typical non-PFAS parchment, but brand discloses nothing.
⚠Waterproof or stain-proof treatment
Member's Mark and PFAS, common questions
- Does Member's Mark have PFAS?
- We graded 7 Member's Mark products, averaging Poor (31/100). 1 grade Good or better. Grades are model-based estimates built from published materials, ingredients and disclosures, not lab tests.
- Is Member's Mark non-toxic?
- Member's Mark Heavy Duty Food Service Foil is the highest-graded Member's Mark product we have scored, at 70/100. It depends on the product line rather than the brand, so check the grade of the exact item you are buying.
- Which Member's Mark products are lower concern for PFAS?
- The highest-graded Member's Mark products we have scored are Member's Mark Heavy Duty Food Service Foil. That is our model-based estimate from materials and public disclosure, not a lab test.
- Which Member's Mark products should I avoid?
- The lowest-graded Member's Mark products we have scored are Member's Mark Unbleached Parchment Paper 205 sq. ft. 2 pk., Member's Mark Unbleached Parchment Paper 410 sq. ft, Member's Mark Foodservice Film (12" X 3,000'). Each one links to the evidence behind its grade.
Every grade uses the same public rubric. How grades work →