Prep Naturals · Food Storage Containers
PrepNaturals 25 oz Food Storage Containers with Lids
Lower-risk food storage; plastic containers rarely require PFAS, but manufacturer transparency on coatings or treatments is absent.
Prep Naturals food storage containers are basic rigid plastic, a category with inherently lower PFAS risk compared to nonstick cookware or water-resistant textiles. The brand does not disclose coating or treatment chemistry, and no third-party lab data is publicly available.
Shop Prep Naturals on Amazon →Material
BPA-free plastic (likely polypropylene or polyethylene terephthalate)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
food packaging is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
PrepNaturals 25 oz containers are manufactured from BPA-free plastic, most likely polypropylene (PP) or polyethylene terephthalate (PET) based on typical food-storage-container construction. These materials are chemically stable at room temperature and do not leach the hormone-disrupting compounds found in older polycarbonate formulations. Both PP and PET are FDA-cleared for food contact and have decades of safety data supporting their use in cold and moderately warm food storage.
The brand's record and disclosure
Prep Naturals has not published detailed material certifications, third-party testing results, or explicit statements on PFAS-free status on their food storage line. The brand markets the containers as 'BPA-free' but provides no transparency on other additives, processing aids, or coatings that might contain PFAS (such as anti-slip or grease-resistant treatments applied to lids). No recalls or safety actions against this specific product have been documented in public records.
How it compares in its category
Food-storage containers made from PP or PET are the industry standard and generally lower-risk than older polycarbonate or melamine options. Many competitors (Rubbermaid, Sistema, OXO) offer similar BPA-free plastic containers with comparable hazard profiles. Prep Naturals' positioning as a budget-friendly, eco-conscious brand does not distinguish it materially from mainstream alternatives in terms of chemical safety, though the lack of published testing is slightly below transparency norms for premium brands.
If you buy it
Store food at room temperature or refrigerated; do not microwave these containers unless the lid or manufacturer label explicitly permits it, as heating can increase the risk of minor leaching of residual monomers or additives. Replace containers if the plastic becomes cloudy, discolored, or develops odors, which may signal degradation of the polymer matrix. Hand-wash with mild detergent rather than harsh bleach or abrasive scrubbing to avoid scratching the surface, which can harbor bacteria and slightly increase surface leaching over time. Do not store fatty or acidic foods (oils, vinegar, citrus) for extended periods, as these can accelerate minor plastic degradation.
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.”
Bisphenol A (BPA) and structural analogs
Product is labeled BPA-free; no recalls or reports of BPA contamination in Prep Naturals containers exist. Polypropylene and PET do not inherently contain BPA.
Phthalates in plasticizers
PP and PET typically do not require phthalate plasticizers, but some manufacturers may add them as processing aids or for flexibility in lid components. Prep Naturals does not disclose plasticizer chemistry; risk is minimal if formulation adheres to FDA food-contact rules, but absent third-party verification leaves a small gap.
Leaching of residual monomers or oligomers
Trace amounts of unpolymerized PET monomers (acetaldehyde) or PP oligomers can migrate into food under heating or extended acidic/fatty food contact. Risk is low at room temperature; no specific complaints about Prep Naturals containers have been documented.
Microplastic shedding from container degradation
Well-maintained PP and PET containers do not shed microplastics under normal storage conditions. Risk increases only after physical damage (scratches, cracks) or repeated high-temperature exposure, which is user-dependent.
PFAS in coatings or lid treatments
Lids may incorporate anti-slip or grease-resistant coatings that could contain short-chain PFAS. Manufacturer does not disclose lid composition or PFAS-free certification; this is the primary transparency gap for this product.
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
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⚠Risky category by default
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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
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Cream 6.6-Cup Non-Stick Glass Food Storage Container with Lid
borosilicate glass with non-PFAS lid
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⚠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.