Prep Naturals · Food Storage Containers
Prep Naturals Meal Prep Containers
Lower-concern option; PP food storage typically avoids high-risk PFAS coatings, but brand transparency is absent.
Prep Naturals meal prep containers are standard polypropylene plastic, a material not typically treated with PFAS-based nonstick or water repellent coatings. However, the brand provides no public disclosure about PFAS or material sourcing, making independent verification impossible.
Shop Prep Naturals on Amazon →Material
Polypropylene (PP) plastic containers
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
Prep Naturals Meal Prep Containers are polypropylene (PP, #5 plastic), a thermoplastic that resists heat better than many common food storage plastics and does not contain BPA by formulation. PP is food-contact approved by the FDA and is chosen for meal prep because it tolerates repeated hot-filling and microwave use within limits. However, any plastic can degrade and leach if overheated, scratched, or aged, so material integrity is the primary concern, not the resin type itself.
The brand's record and disclosure
Prep Naturals is a private-label kitchenware brand sold primarily through Amazon and does not publish detailed material certifications, third-party testing, or chemical transparency reports. No significant recalls, lawsuits, or public health warnings are documented for this product line. The brand's silence on formulation details (such as whether hinges, seals, or colorants contain problematic additives) is typical of budget meal-prep brands but limits confidence in ingredient assurance beyond regulatory baseline.
How it compares in its category
PP meal-prep containers like these are broadly comparable in safety profile to OXO, Sistema, and Rubbermaid equivalents. Glass alternatives (Pyrex, Borosilicate) eliminate plastic leaching risk entirely but are heavier and break. High-transparency brands like Pyrex or Caraway publish more detailed sourcing and testing; Prep Naturals does not. For the price point, this product sits in the mainstream acceptable range, not premium, but also not a recognized high-risk outlier.
If you buy it
Avoid microwave use above 160 degrees F (70 C) and do not use in conventional ovens. Inspect containers regularly for cracks, clouding, or permanent discoloration, which signal polymer degradation; replace if found. Wash by hand or in the top rack of the dishwasher and avoid prolonged exposure to hot water or oils, which accelerate plastic aging. Store away from direct sunlight, which degrades PP over 1-2 years.
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 and BPS leaching
Polypropylene is formulated without BPA as a baseline; no public recalls or testing suggest BPA or BPS in Prep Naturals containers. Risk is minimal for this material class.
Phthalate plasticizers
PP does not require phthalates in its backbone, but flexible seals or gaskets on lids may contain plasticizers; Prep Naturals does not disclose seal composition. Risk is low but unverified.
Leaching from polymer degradation
Repeated heating, dishwasher cycles, and UV exposure degrade PP over years, potentially releasing oligomers and additives. This is a general aging risk for all plastic containers, not specific to this brand.
Microplastics from wear and tear
Scratching, stacking pressure, and degradation can generate microplastics; any food contact with heavily abraded surfaces increases ingestion risk. Regular inspection and replacement mitigate this.
Colorants and additives in pigments
No documented cases of heavy metal contamination or problematic azo dyes in PP meal-prep containers from this brand. Additives are presumed within FDA tolerances absent evidence to the contrary.
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.