Compare Food Storage Containers
Glasslock 18-Piece Assorted Oven Safe Container Set scores higher on safety - here's why.
The most important dimensions, side by side.
Tempered soda-lime glass is chemically inert and FDA-approved — no chemicals leach into your food. Slightly more susceptible to thermal shock than borosilicate but perfectly safe for daily use.
Soda-lime glass is chemically inert and FDA-approved — safe for daily food contact. Pyrex US uses tempered soda-lime (not borosilicate), which means you should avoid sudden freezer-to-hot-oven transitions.
Food-grade polypropylene lids are FDA-approved and BPA-free by nature — a solid choice, though not as inert as silicone or glass lid materials.
BPA-free polypropylene lids are FDA-approved and safe at normal storage temperatures — a reliable plastic choice for food-contact lids.
Confirmed BPA-free across both the glass containers and polypropylene lids.
Confirmed BPA-free for both the glass containers and polypropylene lids.
Glasslock has not published PFAS-free testing for the lid silicone gaskets — a transparency gap but not unusual in 2026.
Pyrex has not published PFAS-free testing for the lid material — common across most brands in this category.
Oven-safe to 450°F via TEMPERMAX tempering technology — full versatility from fridge to oven.
Oven-safe to 425°F in a preheated oven — suitable for reheating and light baking, but avoid broiling or rapid temperature changes.
The 4-tab locking clip system with integrated silicone gasket is the most leak-resistant design tested by expert reviewers — ideal for transporting soups and liquids.
Press-fit lids sit on top without locking or sealing — adequate for refrigerator storage but will not prevent leaks during transport.
Both glass containers and polypropylene lids are fully dishwasher safe — no hand-wash components.
Both glass containers and PP lids are dishwasher safe — containers on any rack, lids on the top rack.
The 4-tab locking design is very secure but requires snapping all four sides with two hands — slower than press-fit or one-handed snap designs.
Simple press-fit lids lift on and off with one hand — the easiest daily use in this comparison, trading seal security for convenience.
Containers stack with lids on and nest with lids off — though the mixed shapes (round, square, rectangle) are less space-efficient than uniform sets.
Round containers nest inside each other and rectangular containers stack flat — efficient for both fridge organization and cabinet storage.
Everything you need to make the call - who each one is for, and who should skip it.
Go for it if you...
You want glass containers with genuinely leakproof lids for transporting lunches and soups
You need an affordable 9-container glass set under $40 for meal prep
You regularly move containers from fridge to oven — these handle 450°F
You prefer everything to go in the dishwasher without exception
You primarily store leftovers in the refrigerator and want a safe glass alternative to plastic
You want the simplest possible daily use — press-fit lids open and close with one hand
You need an affordable 9-container glass set for under $28
You trust the Pyrex heritage brand and want easy replacement lid availability
The main thing to know
The polypropylene lids are the weakest link — Glasslock has not disclosed PFAS-free status for the lid gasket material, and the specific plastic formulation beyond "BPA-free" is not detailed.
The press-fit lids are not airtight or leakproof. Pyrex Simply Store is designed for home refrigerator use — if you pack lunches or transport food, these lids will shift and leak.
Skip this if you...
You want to eliminate all plastic from your food storage — the PP lids are direct food-contact surfaces
You need one-handed lid operation — the 4-tab locking system requires two hands
You specifically need PFAS-free verification on lid gaskets
You need leakproof containers for transporting lunches, soups, or liquids
You want borosilicate glass — Pyrex US uses soda-lime glass since 1998, which has thermal shock limitations
You want PFAS-free verification on lid gasket materials
Neither of these quite what you're looking for?
I've reviewed all Food Storage Containers options at every price pointEvery Food Storage Containers in our database is scored using R3's deterministic scoring system - the same inputs always produce the same score. For this comparison, we evaluated Glasslock and Pyrex across 3 independent criteria: Safety (94%), Efficacy (6%), Usability (1%). No sponsored rankings. No paid placements.
Straight answers - no sponsored content, no filler.
I'd start with Glasslock Glasslock 18-Piece Assorted Oven Safe Container Set - it scored 5.9/10 overall in our scoring system. Safety is our top-weighted scoring pillar, followed by efficacy, and usability. Check which pillar matters most to your family and compare those specific scores.
R3 uses a deterministic scoring system - the same inputs always produce the same score. We evaluate each Food Storage Containers across Safety, Efficacy, Usability using independently verified data. No sponsored rankings. No paid placements. Every score is fully reproducible.
Not necessarily. The overall score reflects our weighted rubric, but your priorities may differ. If you care most about safety, compare the safety scores directly. If budget drives your decision, the prices tell a clearer story. The "right" pick is the one that matches what matters most to your family.
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