Sistema · Lunch Boxes & Food Containers
Sistema Lunch Plus Lunch Box
Lower concern; no PFAS risk from plain polypropylene lunch box.
Sistema lunch boxes are primarily polypropylene plastic with no known coatings or water-resistant treatments. No public PFAS claims or third-party verification available; material choice itself presents lower PFAS risk.
We flunk more products than we pass. This one earned its grade. How we grade
Material
polypropylene (PP) plastic container
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
food packaging is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Microplastics
PP can fragment into microparticles if exposed to prolonged heat, UV, or mechanical stress (repeated flexing, scratching). Normal refrigerated or room-temperature use poses minimal risk; microwave overheating or dishwasher heat cycling may accelerate particle release over years of use.
Source: EPA ↗Oligomer and stabilizer leaching (additive migration)
PP containers contain small-molecule stabilizers (e.g., calcium stearate, hindered amine light stabilizers) and colorants that may migrate at elevated temperatures or in contact with fatty/acidic foods. Migration is typically within regulatory limits but not zero; risk increases with container age and repeated heating.
Microbial growth if seals degrade
Polypropylene lids and seals can become brittle and fail to seal hermetically over time, allowing condensation and bacterial colonization in stored food. This is a mechanical rather than chemical hazard but common with plastic food containers in regular use.
What’s reassuring
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
BPA & bisphenols
Polypropylene formulations do not require BPA or related bisphenols as monomers or processing aids. No evidence of BPA leaching from Sistema PP containers in published literature or regulatory findings.
Source: FDA ↗Phthalates
PP does not use phthalate plasticizers by standard chemistry; these are found in PVC and some polyester formulations. Sistema Lunch Plus carries no identified phthalate risk.
Source: ATSDR ↗The full breakdown
What it's made of and why it matters
Sistema Lunch Plus containers are polypropylene (PP, #5 plastic), a thermoplastic chosen for food storage because it resists moisture, tolerates mild heat, and does not contain BPA or phthalates by formulation. PP is one of the more chemically stable food-contact plastics and does not leach problematic compounds under normal use conditions (room temperature, refrigeration, or microwave at moderate settings). The polymer itself is inert once cured; hazard risk comes primarily from additives or degradation under heat stress.
The brand's record and disclosure
Sistema (owned by Silgan Containers) does not publish detailed chemical composition or third-party food-contact safety certifications on its consumer website. The brand has no known recalls related to chemical leaching or toxic releases. Regulatory compliance is presumed through FDA Food Modernization Act adherence (implicit for US market sale) and EU food-contact plastic rules if sold in Europe. Transparency on specific additives (colorants, stabilizers) is not publicly disclosed, which is typical but limits independent verification.
How it compares in its category
PP food containers occupy the middle ground: safer than older polycarbonate (#7) or PVC (#3) but slightly less inert than glass or stainless steel. Sistema Lunch Plus is standard-issue polypropylene with no marketed eco-resin or additive-free claims, placing it in the mainstream commercial tier. Competitors (e.g., Rubbermaid Brilliance, OXO, Lock and Lock) use equivalent PP or similar polyester plastics; Sistema is not distinguished positively or negatively on chemical safety within the segment.
If you buy it
Keep containers away from direct sunlight and heat sources above 120°C (248°F) to prevent PP degradation and potential oligomer or stabilizer migration. Do not use in oven or on stovetop; microwave use is safe at brief intervals and low power if food is not superheated. Wash by hand or in cooler dishwasher cycles to extend plastic life. Replace containers if warping, discoloration, or odor develops, as these signal polymer breakdown. Seal lids properly after each use to prevent microbial growth in humid storage conditions.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Sistema has made none
Formulations change between production runs, so check the current label. How we grade.
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More lunch boxes & food containers grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.