Freshlock 10-Piece Glass Storage Set vs Glass Meal Prep Set: which is safer?
Pyrex Glass Meal Prep Set is our pick: better on PFAS and on the overall hazard picture.
Pyrex
Freshlock 10-Piece Glass Storage Set
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossiblePlastic lid degradation and microplastics
PossibleAdditive migration from plastic lids
ReportedGlass breakage and physical injury
Our pick
Pyrex
Glass Meal Prep Set
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleMetal lid corrosion and leaching
ReportedSilicone or rubber gasket degradation
ReportedThermal shock fracture from glass
Where these two actually differ
- We flag Plastic lid degradation and microplastics, Additive migration from plastic lids, Glass breakage and physical injury and Bacterial growth in degraded or poorly sealed lids on the Pyrex and not on the Pyrex.
- We flag Metal lid corrosion and leaching, Silicone or rubber gasket degradation and Thermal shock fracture from glass on the Pyrex and not on the Pyrex.
- The Pyrex is Borosilicate glass containers with plastic lids (PP/TPE closure material unspecified) where the Pyrex is borosilicate glass with metal lids (likely stainless steel or aluminum), which is most of the difference in these two grades.
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 storage containers: see the full ranking