Pyrex Totalseal · Food Storage Containers
PYREX 18-Piece Clear Glass Food Storage Container Set
Lower PFAS concern, glass is inherently safe; check lid composition if you have sensitivities.
Pyrex glass storage containers themselves are borosilicate glass, a material with no inherent PFAS risk. The polypropylene lids are the potential concern point; Pyrex does not disclose whether lids contain PFAS-based coatings or water-resistant treatments. No lab data or third-party verification publicly available for this specific set.
Shop Pyrex Totalseal on Amazon →Material
borosilicate glass with polypropylene 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 Totalseal uses borosilicate glass, a highly stable compound resistant to thermal shock and chemical leaching. The lids are polypropylene (PP), a food-grade plastic rated for temperatures up to about 110°C (230°F). Glass itself does not leach harmful chemicals under normal food storage conditions, making this fundamentally safer than BPA-prone plastics. The combination isolates your food from plastic contact during refrigerated or room-temperature storage, which is the primary use case.
The brand's record and disclosure
Pyrex (now owned by Instant Brands) does not publicly disclose PFAS testing or avoidance commitments, which is typical of glassware manufacturers who view the issue as primarily a cookware/non-stick concern. The brand has no major safety recalls tied to this product line or material composition. Pyrex benefits from decades of borosilicate glass reputation in scientific and kitchen use, though parent-company ownership changes have not altered core material specs.
How it compares in its category
Glass containers are the safest baseline in food storage; they avoid the BPA, phthalate, and microplastic concerns of hard plastics or polycarbonate alternatives. Pyrex's borosilicate is more durable and heat-resistant than cheaper glass brands. The polypropylene lids are standard across most glass container lines; the advantage here is that glass dominates contact surface, minimizing polymer exposure compared to all-plastic systems.
If you buy it
Avoid temperatures above 110°C (230°F) with lids on; microwaving without lids is fine. Replace lids if they crack, warp, or develop persistent odor, as degraded plastic may leach. Hand-wash lids in warm (not hot) soapy water; dishwasher heat can degrade seals over years of use. Glass itself is dishwasher-safe and will not degrade; inspect for hairline cracks before storing acidic foods long-term.
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.”
Polypropylene lid leaching (general)
PP lids are food-safe under normal conditions but may leach trace oligomers or residual monomers if heated above 110°C or exposed to strong solvents. At typical refrigerator and room temperatures, leaching is minimal and not established as a health concern in this product.
Borosilicate glass thermal shock or breakage
While borosilicate is more resistant than soda-lime glass, rapid temperature changes (e.g., moving from freezer to oven) can still cause cracking. Broken glass poses a physical hazard; inspect containers regularly for fine fractures.
Lid seal degradation over time
User reports note that polypropylene lids lose elasticity and airtight sealing after 2-3 years of frequent dishwasher use or UV exposure. This compromises food freshness but does not introduce chemical hazards; replacement lids are available separately.
BPA or BPS in lid formulation
Pyrex Totalseal lids are stated to be BPA-free. Independent testing of this specific lid line is not publicly available, but polypropylene itself does not require BPA hardening, making accidental contamination unlikely.
Microplastics from plastic lids
Polypropylene lids do not shed microplastics at room temperature or during normal washing. Degradation would require extreme heat or prolonged UV exposure not typical in food storage use.
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.