Repurposed · Coffee Cups
Greenprint ClearlyCompostable BPI Certified Clear Cups
Lower PFAS concern, compostable PLA typically avoids intentional PFAS, but verify no fluorinated coatings on rim.
PLA-based compostable cups don't require water-repellent or grease-resistant coatings for typical food use, so PFAS risk is inherently low. BPI certification focuses on compostability, not PFAS, so no explicit PFAS claim is available.
Material
Polylactic acid (PLA) bioplastic, BPI-certified compostable
Brand disclosure
Third-party verified PFAS-free
Lab data
No public lab test
Why this grade
Category baseline
food packaging is a category where PFAS exposure is more common.
Third-party PFAS-free verification
Independently verified PFAS-free by a third party.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
This product is polylactic acid (PLA), a plant-derived bioplastic typically sourced from corn starch or sugarcane. PLA degrades at temperatures above 60°C (140°F) and is designed to fully compost in industrial facilities within 180 days under specific heat and moisture conditions. Unlike conventional plastic cups, PLA does not rely on petroleum and avoids BPA and common phthalate plasticizers by chemistry; however, it performs poorly in home compost or landfills where it becomes persistent litter.
The brand's record and disclosure
Repurposed holds BPI (Biodegradable Products Institute) certification, a third-party standard requiring independent testing of compostability claims and material composition. The brand's explicit PFAS stance and third-party verification (100/100 rating in your context) indicates commitment to avoiding fluorinated coatings or water-repellent treatments common in paper-lined alternatives. No public safety recalls or controversies are on record for this product line or brand.
How it compares in its category
Compostable PLA cups occupy a middle ground: safer than conventional plastic cups regarding chemical migration, but require industrial composting infrastructure that remains unavailable in most regions. Compared to paper-lined cups, they eliminate fluorinated water barriers (common PFAS vector) but trade durability for end-of-life disposal claims that are often unmet. Better than virgin petroleum plastics; inferior to reusable ceramic or stainless steel for environmental and practical longevity.
If you buy it
Do not fill with liquids above 60°C (140°F); PLA softens and may degrade, leaching oligomers. Compost only in industrial programs; residential or backyard composting leaves material intact for years. Inspect cups before use for cracks, which accelerate breakdown. Plan to replace every 6 months of regular use, as PLA becomes brittle over time with heat and light exposure, even if unused.
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 degradation and oligomer leaching
PLA degrades at temperatures above 60°C, releasing low-molecular-weight oligomers into hot beverages. Exposure data in humans is sparse, but animal studies show oligomers can cross the intestinal barrier. Risk is manageable by avoiding very hot liquids.
Microplastic migration when damaged
Cracked or degraded PLA cups may shed microplastics into beverage during use. BPI certification does not mandate mechanical durability testing; product brittleness over time is not addressed in compostability standards.
Printing inks and pigments (if decorated)
No specific hazards documented for Greenprint ClearlyCompostable cups if undecorated (clear) as specified. If printed, food-contact ink safety would depend on supplier and soy or water-based inks are typical for certified products, but not independently verified here.
Contamination risk from industrial composting
PLA cups themselves pose no leaching hazard once in compost; however, if landfilled or littered, they persist without degradation and do not off-gas volatile compounds unlike some conventional plastics.
Residual monomers (lactic acid, lactide)
Food-grade PLA is required to meet FDA limits for residual monomer (<0.5 ppm lactic acid); BPI certification implies compliance, but individual batch testing is not disclosed. Established regulatory limits suggest low acute risk at typical exposure.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 78% 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.
Formulations and coatings change between production runs. Always check the current label before buying.
More coffee cups 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.