Duro Bag 25 lb Short Heavy Duty Kraft Grocery Bag vs #9 White 5.5x4.5" Grease Resistant Bags (2,000/Case): which is safer?
Duro Bag 25 lb Short Heavy Duty Kraft Grocery Bag is the clear pick. #9 White 5.5x4.5" Grease Resistant Bags (2,000/Case) carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
Duro Bag Manufacturing
Duro Bag 25 lb Short Heavy Duty Kraft Grocery Bag
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleMold or microbial growth on stored paper
Westrock
#9 White 5.5x4.5" Grease Resistant Bags (2,000/Case)
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
LikelyGrease-resistant coating leaching (fluorochemical PFAS suspected)
PossibleCoating breakdown and microparticle migration
PossibleFormaldehyde or other VOCs from coating curing process
Where these two actually differ
- We flag Mold or microbial growth on stored paper on the Duro Bag Manufacturing and not on the Westrock.
- We flag Grease-resistant coating leaching (fluorochemical PFAS suspected), Coating breakdown and microparticle migration and Formaldehyde or other VOCs from coating curing process on the Westrock and not on the Duro Bag Manufacturing.
- The Duro Bag Manufacturing is Unbleached kraft paper where the Westrock is Paper/kraft with grease-resistant coating (type unspecified), which is most of the difference in these two grades.
- The gap is 45 points, wide enough that this is not a close call, and the Duro Bag Manufacturing is the one to buy.
- We are less certain about the Westrock grade, at 35% confidence against 72%, 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 bakery bags: see the full ranking