DIVA Cup Model 2 vs Steriliser: which is safer?
DIVA Cup Model 2 is our pick: better on PFAS and on the overall hazard picture.
Our pick
Aisle
DIVA Cup Model 2
PFAS grade
A 100/100
Overall grade
A 96/100
Verdict
Buy
Hazard flags
⚑ 1
Material
Medical-grade silicone (body); no Teflon-type coating or Teflon-family coating coatings
Confidence
82%
PossibleBacterial growth and biofilm
Ruby Cup
Steriliser
PFAS grade
B 80/100
Overall grade
D 68/100
Verdict
Buy
Hazard flags
⚑ 3
Material
Stainless steel heating chamber with silicone/plastic components
Confidence
72%
PossibleSilicone/plastic component degradation
PossibleMineral or bacterial buildup in water chamber
PossibleSteam or thermal damage to menstrual cup
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 menstrual cups: see the full ranking