OXO · Food Storage Containers
OXO Good Grips Prep & Go Container Set
Lower concern, simple plastic food container with no known PFAS triggers, but brand offers no explicit disclosure.
OXO Good Grips Prep & Go containers are injection-molded polypropylene with silicone seals, common food-storage materials without established PFAS use. The product has no nonstick coating, water-repellent treatment, or stain resistance that would typically introduce fluorochemicals.
Shop OXO on Amazon →Material
Polypropylene (PP) plastic containers with silicone gaskets
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
Category baseline
food packaging is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
This set uses polypropylene (PP, plastic #5) for the rigid containers and silicone for the gaskets. Polypropylene is a relatively stable plastic with a higher melting point (around 130°C / 266°F) compared to softer plastics like polystyrene or PVC, making it less prone to leaching under normal cold-storage and warm-food conditions. Silicone gaskets are chemically inert and do not typically release harmful compounds during food contact. The risk of BPA, phthalates, or other endocrine disruptors from this material pairing is substantially lower than from polycarbonate or older polyvinyl chloride containers.
The brand's record and disclosure
OXO does not publish explicit third-party certifications (such as BPA-free validation or SVHC declarations) on this product line, nor does the brand maintain a public PFAS policy statement. This silence is not unusual for mainstream kitchenware brands and does not indicate a known contamination issue. OXO has not faced documented recalls or safety controversies specific to this container line for chemical leaching. The brand's general reputation is oriented toward ergonomic design and durability rather than advanced material transparency.
How it compares in its category
Polypropylene food containers are among the safest in the plastic storage category and are widely recommended by food safety agencies for microwave and dishwasher use within temperature limits. This product is functionally equivalent to comparable offerings from Rubbermaid, Pyrex (plastic lines), and Sistema. Glass or stainless-steel alternatives eliminate plastic leaching risk entirely but are heavier and more expensive. OXO's design (locking lids, stackability) is typical of mid-range storage container sets and does not introduce additional chemical exposure compared to competing PP-based systems.
If you buy it
Do not microwave these containers unless OXO explicitly labels them microwave-safe; most polypropylene products are not recommended for microwave heating because sustained heat can soften the plastic and potentially degrade the gasket seal. Hand-wash or follow label guidance for dishwasher compatibility, as repeated high-temperature cycles may eventually compromise silicone durability. Replace containers if lids become warped, gaskets crack, or the plastic becomes cloudy or brittle, as these are signs of material degradation. Store only at room temperature or refrigeration; do not use for hot-food storage immediately after cooking.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
BPA/BPS and other endocrine disruptors
Polypropylene does not inherently contain BPA or BPS, and OXO's typical manufacturing does not use these chemicals in the base resin. No recalls or complaints on record for this product line.
Phthalates
Phthalate plasticizers are not standard in polypropylene formulations; they are more common in flexible PVC and polyvinyl chloride products. Silicone gaskets do not use phthalates as a rule.
Microplastics from container degradation
Repeated mechanical stress (stacking, dropping, dishwasher cycles) or prolonged UV exposure can cause surface cracking and micro-particle shedding from the polypropylene; risk is low under normal storage conditions but increases with age. Regular inspection for visible wear is recommended.
Silicone gasket breakdown or leachables
High-quality food-grade silicone (which OXO typically sources) has minimal leaching risk and no documented issues in this product category. Gasket integrity should be monitored visually for cracks or deformation.
Off-gassing from plastic storage
Polypropylene has low volatile organic compound (VOC) emissions at room temperature, in contrast to softer plastics. New containers may have a faint plastic odor that dissipates within hours to days and does not indicate a safety hazard.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Food Storage Containers
Caraway
Food Storage Set
Glass containers with plastic lids
Lower concern; glass + plastic lids with stated PFAS-free position, but no third-party verification of lid material.
⚠Risky category by default
Caraway
Home 9-Piece Mini Food Storage Set
Borosilicate glass containers with plastic lids
Lower-concern option; glass containers avoid PFAS coatings, but verify lid material before purchase.
⚠Risky category by default
Caraway
Cream 6.6-Cup Non-Stick Glass Food Storage Container with Lid
borosilicate glass with non-PFAS lid
Lower PFAS concern, glass container with stated non-PFAS lid, though third-party verification absent.
⚠Risky category by default
More food storage 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.