Pyrex · Food Storage Containers
PYREX 18-Piece Clear Glass Food Storage Container Set
Lower PFAS concern, glass containers are inherently safe; plastic lids carry modest risk but no confirmed data.
Pyrex 18-piece sets use borosilicate glass, which does not require PFAS coatings and poses minimal PFAS exposure risk. The plastic lids may contain processing aids or slip agents, but Pyrex provides no disclosure on PFAS or coatings. No lab data or third-party verification available; brand transparency is absent.
Shop Pyrex on Amazon →Material
borosilicate glass with plastic lids
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.
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
Pyrex containers use borosilicate glass, a high-silica formulation that resists thermal shock and chemical leaching. The plastic lids are typically polypropylene (PP) or similar, which are among the more chemically stable food-contact plastics. Glass itself is chemically inert and does not degrade into food; the risk surface is limited to the lid seals and any plastic gaskets that contact food during storage.
The brand's record and disclosure
Pyrex (owned by Instant Brands) does not publicly disclose detailed PFAS testing or PFAS-free certifications for this product line. The brand has not faced major food-storage safety recalls in recent years. Pyrex maintains compliance with FDA food-contact regulations but does not advertise third-party testing or materials transparency beyond regulatory baseline.
How it compares in its category
Borosilicate glass food containers are among the safest options available; they avoid BPA and phthalate concerns present in some polycarbonate or polypropylene-only alternatives. Competing glass-container brands (Rubbermaid Brilliance, OXO) use similar materials and comparable lid formulations. Glass containers cost more upfront but eliminate degradation risks that affect plastic-only storage over time.
If you buy it
Store food at room temperature or refrigerated; avoid direct contact between very hot food and plastic lids (cool food slightly first or transfer to a non-plastic container when hot). Replace lids if they become cloudy, cracked, or warped, as seal integrity affects both food preservation and leachate risk. Hand-wash lids rather than dishwasher to extend plastic life, though the containers themselves are dishwasher-safe.
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.”
Plastic lid leaching (non-PFAS)
Polypropylene lids can leach trace compounds when exposed to heat or acidic foods over extended periods. Risk is low under normal refrigerated storage but increases if lids contact hot food or are used in high-heat environments repeatedly.
Seal degradation and bacterial growth
Plastic gaskets and lids can degrade or accumulate food residue in crevices if not cleaned thoroughly, potentially creating reservoirs for microbial growth. This is a maintenance issue rather than a manufacturing defect.
Glass breakage hazard
Borosilicate glass is impact-resistant but not shatterproof. Some users have reported cracks or shattering from thermal shock (sudden temperature changes) or drops, releasing sharp glass fragments into food or storage areas.
Lid staining and odor retention
Plastic lids commonly stain and retain odors from foods like tomato sauce or turmeric; while not a safety hazard, this may indicate surface absorption of compounds. Replacement lids are commercially available but at additional cost.
BPA/BPS in plastic components
Pyrex has not disclosed BPA or BPS use in this product's lids. Polypropylene formulations for food-contact typically do not include BPA, but independent testing of this specific lid batch is not on public record.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 88% 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.