Premier 3.5-Qt. MineralShield Non-Stick Saucepan with Lid vs Rio Advanced 3qt Ceramic Nonstick Sauce Pan with Lid: which is safer?
GreenPan Rio Advanced 3qt Ceramic Nonstick Sauce Pan with Lid is the clear pick. Calphalon Premier 3.5-Qt. MineralShield Non-Stick Saucepan with Lid carries a failing PFAS grade, and we never recommend buying a failing product.
Calphalon
Premier 3.5-Qt. MineralShield Non-Stick Saucepan with Lid
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleTeflon-type coating thermal decomposition fume risk
ReportedCoating degradation and flaking
PossibleAluminum-coating interaction under acidic foods
Our pick
GreenPan
Rio Advanced 3qt Ceramic Nonstick Sauce Pan with Lid
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleCeramic coating degradation over time
Where these two actually differ
- We flag PTFE thermal decomposition fume risk, Coating degradation and flaking, Aluminum-coating interaction under acidic foods and Proprietary coating composition opacity on the Calphalon and not on the GreenPan.
- We flag Ceramic coating degradation over time on the GreenPan and not on the Calphalon.
- The Calphalon is Aluminum with proprietary non-stick coating (MineralShield) where the GreenPan is ceramic nonstick coating, which is most of the difference in these two grades.
- The gap is 70 points, wide enough that this is not a close call, and the GreenPan is the one to buy.
- We are less certain about the Calphalon grade, at 35% 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 nonstick saucepans: see the full ranking