Compostables Ltd · Compostable Bowls
Matter Compostable Fiber Disposable Bowls
Medium-high risk. Skip until coating is disclosed.
Compostable fiber that typically relies on fluorinated coatings for grease and water resistance needed in food contact. The manufacturer provides no coating disclosure or PFAS-free certification.
The safe swap
Vegware
Bridge-Gate 12 oz. White Bagasse Bowl (1000 per Case)
100/100 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 fiber with unspecified waterproof coating
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.
Category baseline
PFAS exposure happens more often with clothing products.
No PFAS disclosure
The company has not publicly discussed PFAS in this product.
PFAS
Compostable fiber bowls commonly use Teflon-family coating or fluorocarbon-based water repellents; this brand has not disclosed its coating chemistry. PFAS in food-contact coatings leach into fatty or acidic foods and accumulate in human tissue.
Source: ATSDR ↗Non-fluorinated coating degradation and leachates
If the coating is non-fluorinated (e.g., polyurethane or wax-based), long-term hydrolysis under repeated washing or hot liquid exposure may release oligomers or plasticizers. No label information suggests whether the coating is designed for single or multiple use.
Microplastic or fiber shedding
Compostable fiber bowls can shed microfibers, especially if the coating degrades or the bowl is scratched. Migration into food is possible, particularly with abrasive foods or cutlery use. Risk is low compared to synthetic plastics but not zero.
Formaldehyde / VOCs
Plant fiber bowls often use formaldehyde-releasing adhesives or resins during manufacture. No information on whether Compostables Ltd uses formaldehyde-free binders; off-gassing risk is typically low but higher if bowls are stored in warm conditions.
Source: ATSDR ↗What’s reassuring
Incomplete composting and persistent residues
If the coating is PFAS-based or synthetic, the bowl will not fully biodegrade; fragments will remain in composting facilities or natural environments. This is an end-of-life hazard rather than acute toxicity but undermines the product's environmental claim.
The full breakdown
What it's made of and why it matters
Matter Compostable Fiber Disposable Bowls are molded from plant-based fiber (likely bagasse, wheat straw, or wood pulp) bonded with a waterproof coating to prevent liquid penetration. The fiber itself is low-toxicity, but the coating's composition is the critical unknown: if it contains PFAS-based repellents (common in food-contact coatings), it presents bioaccumulation and persistence risks. The unspecified formulation means end-users cannot assess whether the coating is fluorine-free or based on problematic chemistries.
The brand's record and disclosure
Compostables Ltd has maintained public silence on PFAS use in their coating formulations, which is a red flag in an industry increasingly transparent about this issue. No third-party certifications (such as MADE SAFE or GOTS equivalents for food-contact compostables) are documented for this product. The lack of proactive disclosure suggests either deliberate opacity or absence of rigorous testing, neither of which builds confidence in safety claims.
How it compares in its category
Compostable fiber bowls are inherently lower-risk than plastic single-use alternatives (no BPA/phthalates risk), but they sit in a crowded market where coating transparency varies widely. Leading brands (notably some European compostable manufacturers) now explicitly state PFAS-free coatings; Compostables Ltd's silence places it in the less transparent tier. Truly uncoated fiber bowls degrade in hot liquids; competitors' visible certification of coating chemistry offers comparative reassurance.
If you buy it
Contact Compostables Ltd directly to request documentation of the waterproof coating's chemical composition before committing to bulk purchase. Avoid using these bowls for hot, acidic, or oily foods, which accelerate coating leaching. Store in a cool, dry place to minimize off-gassing. If coating identity remains undisclosed after inquiry, treat as a temporary solution only and rotate to verified PFAS-free alternatives within 6-12 months.
What we don’t know
- Basis
- Model estimate, 35% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Compostables Ltd has made none
Formulations change between production runs, so check the current label. How we grade.
Safer alternatives in Compostable Bowls
Vegware
Bridge-Gate 12 oz. White Bagasse Bowl (1000 per Case)
bagasse (sugarcane fiber), uncoated
Moisture absorption and mold growth if stored improperly
Limited concern
Coating degradation or fiber shedding during use
Limited concern
Low risk. Bagasse bowl with no intentional PFAS and third-party verification.
✓Verified PFAS-free by a third party
World Centric
11.5 oz Fiber Bowl
Fiber-based (likely plant fiber or sugarcane-derived molded fiber)
Coating degradation and fiber particle shedding
Limited concern
Bleach residues and chlorine byproducts
Limited concern
Adhesive or binding agent leaching
Limited concern
Microbial growth if retained moisture
Limited concern
Low risk. Molded fiber products typically avoid PFAS, though brand offers no confirmation.
⚠Risky category by default
Fertile Ground Fiber Bowls
Molded fiber (sugarcane bagasse, wood pulp) with water-based coatings
Water-based coating degradation over time
Limited concern
Mold and microbial growth if reused or stored wet
Limited concern
Thermal delamination if misused at high temperature
Limited concern
Low concern. Fiber bowls with verified PFAS-free positioning and third-party certifications.
⚠Waterproof or stain-proof treatment
More compostable bowls 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.