Pyrex · Roasting Pans
Pyrex Optimum Glass Oval Roaster
Lower PFAS concern; glass cookware avoids Teflon-family coating coatings entirely.
Pyrex Optimum is made from borosilicate glass with no nonstick or Teflon-family coating, eliminating the primary pathway for PFAS in cookware. Glass is an inert material that does not require PFAS-based 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 roaster is borosilicate glass, a high-silica formulation designed for thermal shock resistance and durability. Borosilicate glass does not use polymer coatings, glazes with lead/cadmium risk, or Teflon-family coating non-stick layers, eliminating several hazard pathways common to metal or ceramic cookware. The oval shape and handles are still glass, so there are no plastic or metal-to-food contact points during normal roasting use.
The brand's record and disclosure
Pyrex is a subsidiary of Instant Brands and has maintained its borosilicate glass cookware line continuously since the mid-20th century. The brand provides minimal detailed chemical disclosure but does not market safety certifications or make specific PFAS claims. No major product recalls or safety controversies involving this specific oval roaster model have been documented in public records. Pyrex's long market presence and consistent material choice suggest stable manufacturing standards.
How it compares in its category
Glass roasters like this one are among the safest options in the roasting pan category because they avoid all non-stick coatings, enameled cast iron risks, and reactive metal leaching. Metal roasting pans may leach aluminum or have degraded non-stick coatings; ceramic-coated alternatives carry glaze contamination concerns. The Pyrex oval roaster sits at the lower-hazard end of the category, though it lacks the heat retention advantages of cast iron or stainless steel.
If you buy it
Use the roaster within its stated temperature limits, typically up to 400-425°F depending on Pyrex product line specifications. Avoid rapid temperature changes (e.g., moving from freezer to oven) which can cause thermal shock and breakage. Inspect handles and rim regularly for chips or cracks; discard if structural integrity is compromised. Hand washing is recommended over dishwasher to extend handle integrity and reduce thermal cycling stress.
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 and breakage
While borosilicate glass is more resistant than soda-lime glass, rapid temperature swings can still cause cracking or shattering. This is a physical safety risk rather than a chemical one, but fragmentation creates sharp edges and potential burn exposure.
Lead/cadmium in glass or enamel coatings
Borosilicate glass formulations do not use lead or cadmium in their base composition. If this roaster includes decorative rim enamels or printed logos, those could theoretically carry heavy metals, but no specific testing or recalls document this for the Pyrex Optimum line.
Leaching from glass substrate
Borosilicate glass is chemically inert and does not leach silica, boron, or other glass components into food at typical cooking temperatures. This material class is considered non-reactive and among the safest for food contact.
Handle material degradation
Pyrex oval roasters typically feature heat-resistant plastic or silicone handles. These materials can degrade, crack, or lose grip over years of use and thermal cycling, creating burn or dropping risk. No specific material recalls are on record, but handle integrity should be monitored.
Coating degradation (if present)
This borosilicate product has no polymer or enamel cooking surface, so the typical coating peeling or non-stick failure seen in other cookware does not apply. Any printed decorative elements are not in food contact zones during normal roasting.
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.
Safer alternatives in Roasting Pans
Caraway
Ceramic Rectangle Pan
ceramic nonstick coating
Lower-concern nonstick option with PFAS-free claim and third-party certification; buy with reasonable confidence.
⚠Risky category by default
Caraway
16x13" Roasting Pan With Rack - Non-Stick Ceramic Coated Sage
Ceramic non-stick coating (Teflon-type coating-free, ceramic-based)
Lower PFAS concern, ceramic coating with verified PFAS-free claim and third-party certification.
⚠Risky category by default
Caraway
Home Small Rectangle Pan
Ceramic non-stick coating (Teflon-type coating and PFOA-free)
Lower-concern cookware choice; ceramic coating avoids traditional Teflon-family coating PFAS.
⚠Risky category by default
More roasting pans 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.