Waste Free Pantry · Food Storage Containers
Caraway Home 9-Piece Mini Food Storage Set
Lower PFAS concern for storage; glass and silicone are inherently low-risk, though brand claims lack third-party verification.
Caraway's mini food storage set uses glass containers with silicone lids, materials not typically associated with PFAS. The brand makes PFAS-free claims but provides no published third-party testing or certification.
Brand says: “Caraway markets this product line as PFAS-free and part of their commitment to eliminating 'forever chemicals' from home products.”
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Glass containers with silicone lids
Brand disclosure
Brand claims PFAS-free
Lab data
No public lab test
Why this grade
Category baseline
food packaging is a category where PFAS exposure is more common.
Brand-stated PFAS-free
The brand states the product is PFAS-free (self-declared).
Uncoated safe material
Bare, uncoated material (cast iron, stainless, carbon steel, or glass) with no surface treatment to contain PFAS.
The full breakdown
What it's made of and why it matters
This set uses borosilicate glass, which is chemically inert and does not leach into food under normal storage conditions. The silicone lids are the variable: food-grade silicone is generally stable and non-migratory, but quality and curing practices vary by manufacturer. Glass-and-silicone combinations eliminate the two largest concerns in plastic food storage: BPA/BPS migration and phthalate off-gassing. The mini size suggests use for dry goods, sauces, or pantry items rather than heated storage.
The brand's record and disclosure
Waste Free Pantry positions itself as a sustainability-focused brand with explicit PFAS-free claims. However, no public third-party certifications (FDA compliance statements, NSF International, or independent lab reports) for this specific product are documented in available sources. The brand's disclosure is aspirational rather than backed by published testing data. No recalls or safety controversies specific to Caraway Home containers are on record.
How it compares in its category
Glass-lid containers avoid the durability and migration risks of plastic lids common in budget food storage lines. This set is premium-positioned relative to mass-market plastic storage (like Rubbermaid or Ziploc) and comparable to Pyrex glass sets, but typically at a higher price point. The silicone-lid design is trendy and avoids vinyl chloride or phthalate concerns from PVC lids found on some older storage sets. Mini sizing limits versatility compared to full-range modular systems.
If you buy it
Avoid direct oven or microwave use unless manufacturer explicitly permits; silicone lids have lower heat tolerance than glass. Hand-wash silicone lids to preserve surface integrity and prevent microscopic tears that could harbor bacteria or mold. Inspect lids annually for discoloration, stiffening, or odor changes; silicone can degrade over 3-5 years with repeated temperature cycling. Store in cool, dry conditions to minimize silicone off-gassing, especially in hot climates or direct sunlight.
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.”
Silicone lid degradation and microorganism growth
Silicone lids can develop microscopic surface damage with age, creating pockets where mold or bacteria may colonize if not dried thoroughly after washing. No product-specific incident data exists, but this is a known durability concern in all silicone-lid food storage systems.
Silicone off-gassing and odor migration
Food-grade silicone is stable but can release volatile compounds, especially when new or exposed to heat, causing residual odors that may transfer to stored food. This is aesthetic rather than acutely toxic but is a reported user complaint in silicone-lid container reviews.
BPA/BPS in silicone
Borosilicone (the rubber polymer in silicone lids) does not require BPA or BPS as a plasticizer, and reputable food-grade silicone formulations do not contain these compounds. No evidence of contamination specific to this brand's products is available.
Leachables from adhesives or seals
Glass-to-silicone bonding in lids may involve adhesives; however, borosilicate glass and cured silicone have minimal contact with stored food, and no published data implicates this assembly method in food contamination.
Thermal shock cracking of glass
Borosilicate glass is more resistant to temperature shock than soda-lime glass, but rapid transitions from freezer to room temperature can still cause cracking if lids are not removed first. This is a mechanical safety issue rather than chemical.
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.
Formulations and coatings change between production runs. Always check the current label before buying.
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.