Kirkland Signature Review, Is Kirkland Signature Non-Toxic?
Kirkland Signature averages 30 out of 100 on PFAS Authority's PFAS and toxin screen across the 12 Kirkland Signature products graded as of October 2026, and 1 of them reach its 70 point pass mark.
Kirkland Signature grades Poor on our four-band scale. On disclosure, the brand says nothing publicly about PFAS. See what every brand has published about PFAS for how that compares.
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.
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- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product, all on its full breakdown.
Aquasure
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- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product, all on its full breakdown.
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- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
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2 hazards checked on this product, all on its full breakdown.
Does Kirkland Signature have PFAS, by category
Which Kirkland Signature products are PFAS-free? Good or better, best-graded first
- Polyethylene (PE) film
- We found no PFAS statement from the brand
- Polyethylene film degradation under heat, PE wrap is not microwave-safe and will soften, tear, or potentially…
2 hazards checked on this product, all on its full breakdown.
Which Kirkland Signature products contain PFAS? Poor and Bad, we’d swap these
- Urethane cover, unknown water-resistant coating
- We found no PFAS statement from the brand
- PFAS. Golf ball water-repellent coating coatings historically contain fluorinated compounds; this Kirkland…
- silicone-treated paper
- We found no PFAS statement from the brand
- Silicone oligomer leaching at high heat. Silicone coatings can release trace cyclic oligomers if heated above…
3 hazards checked on this product, all on its full breakdown.
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- Polyethylene (PE) plastic film with slip/release agent
- We found no PFAS statement from the brand
- Microplastic shedding during use, PE film can degrade and fragment if repeatedly stretched, heated, or…
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Silicone-coated paper (presumed)
- We found no PFAS statement from the brand
- Silicone coating degradation at high heat. Silicone is stable up to ~420-450°F under normal baking use. Above…
2 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Polyethylene (PE) film with slip/stretch coating
- We found no PFAS statement from the brand
- Microplastic shedding from heat exposure, PE film can fragment or shed particles if heated above manufacturer…
3 hazards checked on this product, all on its full breakdown.
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- paper microwave bag with grease-resistant coating
- We found no PFAS statement from the brand
- Grease-resistant coating composition (likely fluorinated). Kirkland has not disclosed the chemistry of the…
3 hazards checked on this product, all on its full breakdown.
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- paper-based microwave popcorn bag with grease-resistant coating
- We found no PFAS statement from the brand
- Fluorochemical migration from grease-resistant coating. Grease-resistant paper coatings in microwave popcorn…
2 hazards checked on this product, all on its full breakdown.
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- polyethylene film with unknown moisture/grease barrier coating
- We found no PFAS statement from the brand
- Fluorinated polymer barrier coatings (food-contact surface). Undisclosed barrier treatment in polyethylene…
5 hazards checked on this product, all on its full breakdown.
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Kirkland Signature
Signature Plastic Food Wrap - 6000 Sq. Ft (2 Pack, 12" X 3000 Sq. Ft
- polyethylene (PE) with unclear slip/release coating
- We found no PFAS statement from the brand
- Slip/release coating migration (undisclosed chemistry). Kirkland does not disclose whether slip agents are…
4 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- paper/kraft popcorn bag with grease-resistant coating
- We found no PFAS statement from the brand
- PFAS. Grease-resistant microwave popcorn bag linings commonly contain PFAS (PFOA, PFOS, or other homologs)…
3 hazards checked on this product, all on its full breakdown.
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- PVC or polyethylene film with undisclosed release agent/coating
- We found no PFAS statement from the brand
- PFAS. Undisclosed coating on Kirkland wrap almost certainly contains non-stick agents; commercial food wraps…
4 hazards checked on this product, all on its full breakdown.
Find an alternative on AmazonWhat to buy instead Good or better, in the categories Kirkland Signature sells
- silicone-coated parchment paper
- The brand calls it PFAS-free, which we have not verified
- Silicone coating degradation at extreme heat
2 hazards checked on this product, all on its full breakdown.
- Aluminum foil, uncoated
- Aluminum leaching (acidic/salt contact)
3 hazards checked on this product, all on its full breakdown.
- aluminum foil (bare)
- Aluminum leaching into acidic or salty foods
2 hazards checked on this product, all on its full breakdown.
Kirkland Signature and PFAS, common questions
- Does Kirkland Signature have PFAS?
- Kirkland Signature averages 30 out of 100 on PFAS Authority's PFAS and toxin screen across the 12 Kirkland Signature products graded as of October 2026, and 1 of them reach its 70 point pass mark. Grades are model-based estimates built from published materials, ingredients and disclosures, not lab tests.
- Is Kirkland Signature non-toxic?
- Kirkland Signature Plastic Wrap 11-7/8 x 750', 2-Pack is the highest-graded Kirkland Signature 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 Kirkland Signature products are lower concern for PFAS?
- The highest-graded Kirkland Signature products we have scored are Kirkland Signature Plastic Wrap 11-7/8 x 750', 2-Pack. That is our model-based estimate from materials and public disclosure, not a lab test.
- Which Kirkland Signature products should I avoid?
- The lowest-graded Kirkland Signature products we have scored are Kirkland Signature Plastic Food Wrap, Kirkland Signature Kirkland 3.3 oz Signature Microwave Popcorn, Signature Plastic Food Wrap - 6000 Sq. Ft (2 Pack, 12" X 3000 Sq. Ft. Each one links to the evidence behind its grade.
Every grade uses the same public rubric. How grades work →