Bio Pack To-Go Containers - 6 pack Small
Lower concern but verify waterproof coating composition directly with Biopac UK.
Bio-based fiber containers typically avoid Teflon-type coating and Teflon-family coating. Biopac UK hasn't published PFAS claims or disclosed the waterproof coating formula.
The safe swap
Earthwise
Earth-to-go Earth Bowl EB-32
85/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
compostable pulp/fiber with water-resistant coating (unspecified)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
Waterproof / stain-resistant treatment
Water-repellent treatments have historically contained PFAS chemicals.
No PFAS disclosure
The company has not publicly discussed PFAS in this product.
Category baseline
food packaging is a category where PFAS exposure is more common.
Water-resistant coating leachables (unspecified chemistry)
The interior coating formulation is not disclosed by Biopac UK. Leaching into food is possible with heat, fat, or acidic contents, but cannot be assessed without knowing whether the coating is PFAS-free, wax-based, or synthetic polymer.
Microplastic release during heating or degradation
If the water-resistant coating is a synthetic polymer (rather than natural wax or bioplastic), heating or physical stress may cause microplastics to shed into food. The pulp substrate itself does not shed microplastics.
Contamination from mold or bacterial biofilm if pre-wetted or stored damp
Porous fiber containers retain moisture more readily than plastic. If stored in humid conditions or wet before use, fungal or bacterial growth is possible. This is a use and storage issue rather than a formulation hazard.
What’s reassuring
BPA & bisphenols
Compostable pulp containers do not inherently contain BPA or phthalates. However, if adhesives or processing aids were used in molding, trace contamination is theoretically possible. No testing or complaints are on record for Bio Pack products.
Source: FDA ↗Formaldehyde / VOCs
Formaldehyde-based resins are used in some paper and pulp products for strength and water resistance. Biopac UK does not disclose use of such resins. No independent testing or recalls confirm their presence, but absence of disclosure is a gap.
Source: ATSDR ↗The full breakdown
What it's made of and why it matters
Bio Pack To-Go containers are molded from compostable pulp or fiber (likely sugarcane bagasse or similar plant waste), which is food-safe when uncoated. The critical unknown is the water-resistant coating applied to the interior and exterior. Biopac UK does not publicly specify whether this coating uses PFAS-based fluorochemicals, wax, or other sealants. The coating's chemical identity directly determines leaching risk into food, especially hot or fatty items.
The brand's record and disclosure
Biopac UK maintains a public commitment to compostable and sustainable packaging but does not publish detailed material safety data sheets or coating composition on their website or product labeling. No independent recalls, safety complaints, or certifications (such as OK compost or FDA approval statements) are on record for this specific product line. The brand's silence on PFAS and coating chemistry represents a disclosure gap rather than confirmed absence of concern.
How it compares in its category
Compostable fiber containers are marketed as safer alternatives to plastic-lined paper and expanded polystyrene. However, they typically underperform plastic in barrier properties, necessitating a water-resistant coating whose safety depends entirely on formulation. Most established compostable container brands (such as World Centric or Footprint) disclose coating type (e.g., plant-based PHA or food-grade wax). Biopac's lack of transparency places it below peer standards for consumer trust.
If you buy it
Contact Biopac UK directly and request written confirmation that the water-resistant coating does not contain PFAS or other fluorochemicals. Avoid prolonged contact with hot (above 60 degrees Celsius) or fatty foods (oils, sauces, dressings) until coating safety is verified. Use for ambient or cool foods when possible. Check that containers are fully composted after use; if local composting is unavailable, disposal as waste may leave residual coating in landfill.
What we don’t know
- Basis
- Model estimate, 62% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Biopac UK has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Food Packaging
World Centric
Compostable Fiber Compost-A-Pak Containers
Fiber-based (wood pulp/molded fiber), compostable coating
Proprietary coating chemical migration
Limited concern
Moisture and microbial growth in fiber matrix
Limited concern
Coating degradation under heat or fatty foods
Moderate concern
Recycling contamination if misdisposed
Limited concern
Lower concern with documented PFAS-free commitments, though independent lab confirmation on this specific product absent.
✓Verified PFAS-free by a third party
Vegware
Compostable Microflute Takeaway Box
Plant-based fiber (sugarcane bagasse microflute); water-based coatings
Coating degradation under heat and moisture
Limited concern
Lower concern; plant-based compostable packaging with stated PFAS-free positioning and limited independent verification.
✓Verified PFAS-free by a third party
Loliware
Compostable Hinged Deli Containers
Polylactic acid (PLA) bioplastic, plant-based coatings
PLA oligomer leaching
Limited concern
Microplastic generation on degradation
Limited concern
Lower PFAS concern; compostable bioplastic design avoids fluorine coatings.
✓Verified PFAS-free by a third party
More food packaging 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.