Duralex Clear Glassware & Drinkware for sale, Is It Non-Toxic?
Low PFAS risk. Bare borosilicate glass has no coatings.
Duralex makes plain borosilicate glassware with no surface treatments. Glass is an inert material with no PFAS concern for drinkware and food contact.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Borosilicate glass, uncoated
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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Is Duralex Clear Glassware & Drinkware sale non-toxic? What it is made of
Duralex clear glassware is borosilicate glass, a material engineered to resist thermal shock and chemical leaching. Borosilicate contains silica and boron oxide fused at high temperature into a non-porous, non-reactive structure. Unlike soda-lime glass, it does not leach significant quantities of lead, cadmium, or other metals into food or beverages, even under repeated heating or acidic conditions. The uncoated construction means no surface treatments, glazes, enamels, or polymer coatings are present to degrade or release secondary contaminants.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Thermal shock or fracture
While borosilicate is engineered to resist thermal shock, sudden temperature extremes (e.g., pouring boiling water into a cold glass) can still cause cracking or shattering. This is a mechanical safety issue, not a chemical hazard.
What’s reassuring
Bare uncoated material
Recorded as a bare, uncoated material with no surface coating or treatment.
Lead
Borosilicate glass does not incorporate lead or cadmium as raw materials or colorants in clear formulations. No leaching of these elements into food or beverage has been documented for Duralex products.
Source, ATSDR ↗Enamel or glaze degradation
Duralex clear drinkware is uncoated borosilicate; no enamel, glaze, or ceramic surface treatment is applied. This eliminates risk of coating flaking or chemical leaching from decorative surfaces.
Microplastic contamination
Glass does not shed microparticles into beverages. The rigid, non-polymeric structure prevents fragmentation into the nanoscale or microscale particles of concern with plastics.
Aluminum leaching
Duralex glassware contains no aluminum in the material or internal surfaces; this hazard class does not apply to borosilicate glass drinkware.
How is this PFAS grade calculated?
The brand's record and disclosure
Duralex, owned by Groupe Luminarc and headquartered in France, has manufactured borosilicate glassware since 1945 without recorded recalls or safety violations related to leaching or coating failure. The brand maintains silent on PFAS disclosure and sustainability certifications, though this reflects industry norm for glassware makers rather than a red flag. No controversies or regulatory findings of hazardous substances in Duralex drinkware are on public record. The product's durability and longevity are documented by widespread consumer use across decades.
How it compares in its category
Among clear drinkware, uncoated borosilicate glass is at the lower end of chemical hazard concern compared to ceramic mugs (which may have lead in glazes), enameled cast iron (lead risk in older enamel), or plastic tumblers (BPA, phthalates if not food-grade). Tempered soda-lime glass alternatives are cheaper but carry higher leaching risk with hot or acidic contents. Borosilicate's thermal resistance and material purity position it as one of the lowest-concern long-term drinkware choices in this category.
If you buy it
Borosilicate glass withstands temperatures from freezer to oven (typically to 250°C / 480°F without thermal shock risk) and is low concern for dishwashers and microwave use. Although unbreakable is not accurate, borosilicate can fracture if dropped or struck hard, it is far more durable than standard glass. No special maintenance is needed; normal washing with soap and water is sufficient. Replace pieces only if visible damage (cracks, chips) appears; the material itself does not degrade chemically over time.
What is not known about PFAS in this product?
- Basis
- Model estimate, 92% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Duralex has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Duralex Clear Glassware & Drinkware for sale?
- Stainless steel clad construction, no nonstick coating
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- Clad separation or delamination over time
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- Nickel leaching from stainless steel
3 hazards checked on this product, all on its full breakdown.
- Clad stainless steel, no coating
- The brand calls it PFAS-free, which we have not verified
- Metal ion release during cooking (iron, nickel, chromium)
More cookware 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.