Sistema Review, Is Sistema 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 3 graded products, Sistema averages Good (73/100). On disclosure, the brand says nothing publicly about PFAS. 3 of its products grade Good or better. Grades are model-based estimates, not lab results.
Worth buying from Sistema Good or better, safest first
Sistema
Esquirla Lunch Box Stainless Steel Leakproof Rectangle Portable Food Container Reusable Stackable Meal Prep Container wi
stainless steel and silicone gaskets
Silicone gasket degradation
Repeated dishwasher cycles and exposure to strong detergents or oils may cause silicone…
Stainless steel pitting/corrosion
Prolonged contact with chlorine (bleach), salt, or acidic foods can cause microscopic…
Lower PFAS concern; bare stainless steel container with no coating.
⚠Risky category by default
Sistema
Bento Lunch Box 1,65 L
Polypropylene (PP) plastic container and lid
Microplastics
Repeated heating, freezing cycles, or mechanical stress (cracks, scratches) can gradually…
Bacterial colonization of seams and gaskets
The lid gasket and container seams can harbor moisture and food residue if not cleaned…
Lower concern; rigid PP lunch box unlikely to contain PFAS.
⚠Risky category by default
Sistema
Lunch Plus Lunch Box
polypropylene (PP) plastic container
Microplastics
PP can fragment into microparticles if exposed to prolonged heat, UV, or mechanical…
Oligomer and stabilizer leaching (additive migration)
PP containers contain small-molecule stabilizers (e.g., calcium stearate, hindered amine…
Microbial growth if seals degrade
Polypropylene lids and seals can become brittle and fail to seal hermetically over time…
Lower concern; no PFAS risk from plain polypropylene lunch box.
⚠Risky category by default
Every grade uses the same public rubric. How grades work →