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 doesn't 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 exists.
We flunk more products than we pass. This one earned its grade. How we grade
Material
borosilicate glass with plastic lids
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Category baseline
PFAS exposure happens more often with clothing products.
No PFAS disclosure
The company has not publicly discussed PFAS in this product.
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.
Source: ATSDR ↗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.
What’s reassuring
Uncoated safe material
Bare cast iron, stainless steel, carbon steel, or glass with no PFAS coating.
BPA & bisphenols
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.
Source: FDA ↗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.
What we don’t know
- Basis
- Model estimate, 88% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Pyrex has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Food Storage Containers
Pyrex
Glass Meal Prep Set
borosilicate glass with metal lids (likely stainless steel or aluminum)
Metal lid corrosion and leaching
Limited concern
Silicone or rubber gasket degradation
Moderate concern
Thermal shock fracture from glass
Moderate concern
Lower PFAS concern; glass meal prep containers are inherently a safer material choice.
⚠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.