Pyrex · Dutch Ovens
Vision Corning Ware Pyrex Casserole Dish Roaster Dutch Oven Cran 4 Qt
Lower PFAS concern, plain glass cookware has no intentional Teflon-family coating coatings.
Vision Corning Ware/Pyrex casserole dishes are borosilicate glass with no nonstick or protective coatings that typically require PFAS. Glass cookware carries minimal PFAS risk from manufacturing. No brand PFAS disclosure exists, but the material itself does not require fluorinated treatments.
Shop Pyrex on Amazon →Material
borosilicate glass
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
cookware is a category where PFAS exposure is more common.
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 is borosilicate glass, a silica-based formulation with added boron oxide that creates exceptional thermal shock resistance and durability. Borosilicate glass is chemically inert at typical cooking temperatures and does not leach lead, cadmium, or other heavy metals into food. Unlike many enameled cookware pieces, there is no ceramic coating, glaze, or nonstick surface to degrade, chip, or release particles over time.
The brand's record and disclosure
Pyrex (now owned by Instant Brands) has a long manufacturing history and borosilicate glass cookware has been in continuous production with a strong safety profile. The brand does not prominently disclose detailed chemical composition beyond material type, which is typical for glass cookware manufacturers. No major recalls or widespread safety complaints specific to borosilicate Pyrex Dutch ovens have been documented in public records.
How it compares in its category
Borosilicate glass Dutch ovens are safer than enameled cast iron or ceramic-coated models because they have no coating that can crack or leach. They are also free of Teflon-type coating and other nonstick polymers found in some modern cookware. The main trade-off is weight and heat distribution compared to cast iron, but chemical safety is a significant advantage in this material class.
If you buy it
Avoid rapid temperature changes (e.g., moving from stovetop directly to cold water) to prevent thermal shock and cracking, though borosilicate is far more resistant than soda-lime glass. Use on moderate to medium-high heat; direct high flame can cause uneven heating. Do not use on induction cooktops unless the base has been specially treated. Hand wash with soft sponges to avoid scratches; the glass itself is durable but surface etching from hard scrubbing is cosmetic only and does not affect food safety.
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.”
Thermal shock cracking
Borosilicate is highly resistant to thermal shock but can still crack if exposed to extreme temperature differentials (e.g., hot-to-freezing water). This is a physical safety risk, not a chemical one, and is manageable with proper care.
Lead or cadmium in glass formulation
Borosilicate glass cookware does not intentionally contain lead or cadmium. Pyrex borosilicate formulations have been tested and certified to meet food-contact safety standards; no recalls or contamination reports are on record for this product line.
Coating degradation or leaching
This product has no enamel, ceramic, or nonstick coating, eliminating the risk of coating flaking, chipping, or chemical release that affects enameled or coated Dutch ovens over time.
Microplastic or particulate shedding
Borosilicate glass does not shed microplastics or particles into food under normal cooking use. Surface etching from abrasion is cosmetic and does not produce ingested fragments.
Induction cooktop incompatibility (indirect safety concern)
Standard borosilicate glass Pyrex Dutch ovens are not induction-compatible. Using them on induction cooktops without an adapter can result in uneven heating and potential user safety issues, though the cookware itself remains chemically safe.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 92% 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.
More dutch ovens 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.