8" x 8" x 3" Compostable Fiber Clamshells vs Compostable Fiber Compost-A-Pak Containers: which is safer?

World Centric Compostable Fiber Compost-A-Pak Containers is the clear pick. World Centric 8" x 8" x 3" Compostable Fiber Clamshells carries a failing PFAS grade, and we never recommend buying a failing product.

World Centric 8" x 8" x 3" Compostable Fiber Clamshells

World Centric

8" x 8" x 3" Compostable Fiber Clamshells

PFAS grade

Poor 25/100

Overall grade

Bad 0/100

Verdict

Skip

Hazard flags

⚑ 3

Material

fiber pulp (compostable); grease-resistant coating unknown

Confidence

45%

LikelyUnknown grease-barrier coating chemistry

PossibleCoating degradation under heat or prolonged contact

PossibleBacterial growth or mold if stored damp

Our pick

World Centric Compostable Fiber Compost-A-Pak Containers

World Centric

Compostable Fiber Compost-A-Pak Containers

PFAS grade

Excellent 100/100

Overall grade

Good 74/100

Verdict

Buy

Hazard flags

⚑ 5

Material

Fiber-based (wood pulp/molded fiber), compostable coating

Confidence

78%

PossibleProprietary coating chemical migration

PossibleMoisture and microbial growth in fiber matrix

ReportedCoating degradation under heat or fatty foods

Where these two actually differ

  • We flag Unknown grease-barrier coating chemistry, Coating degradation under heat or prolonged contact and Bacterial growth or mold if stored damp on the World Centric and not on the World Centric.
  • We flag Proprietary coating chemical migration, Moisture and microbial growth in fiber matrix, Coating degradation under heat or fatty foods and Recycling contamination if misdisposed on the World Centric and not on the World Centric.
  • The World Centric is fiber pulp (compostable); grease-resistant coating unknown where the World Centric is Fiber-based (wood pulp/molded fiber), compostable coating, which is most of the difference in these two grades.
  • The gap is 75 points, wide enough that this is not a close call, and the World Centric is the one to buy.
  • We are less certain about the World Centric grade, at 45% confidence against 78%, because it discloses less.

Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →

More food packaging: see the full ranking