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Category guide

Food Storage

Choose safer materials for leftovers, meal prep, and kids’ lunches.

2 avoid11 caution6 better25 best44 items tracked — 13 flagged for concern

Plastic food containers leach chemicals into food — the rate depends on the plastic type, temperature, food acidity, and physical wear. Bisphenol A (BPA) is the most studied: it mimics estrogen and has been linked to hormonal disruption, particularly in fetal development and children. In response to consumer pressure, many manufacturers switched to BPA-free alternatives — but BPS and BPF, the most common replacements, show similar estrogenic activity in cell studies. Scratched, cloudy, or heat-stressed plastic leaches more, regardless of BPA status.

Microwaving food in plastic is the highest-risk scenario: heat accelerates leaching significantly. Even containers labeled "microwave-safe" are certified only to not warp or melt — not to be chemically inert under heat. Acidic foods (tomato, citrus, vinegar-based dishes) stored in plastic also accelerate migration compared to neutral foods.

The safest storage hierarchy is: borosilicate glass first, then 304/316 stainless steel, then food-grade platinum silicone, then plastic only as a last resort for room-temperature, non-acidic, short-term storage. Items in this category are rated on where they fall in that hierarchy and on any additional chemical concerns in their materials.

Key concerns

  • ✕BPA and bisphenol replacements (BPS, BPF)
  • ✕Phthalate plasticizers
  • ✕PFAS in some non-stick coated containers
  • ✕Leaching under heat or with acidic foods

Safer alternatives

Borosilicate glass, 304/316 stainless, food-grade platinum silicone

Read the full Food Storage safety guide →

Compare any two food storage

Click any cell to see a full side-by-side safety comparison.

vs.Polycarbonate Plastic Food ContainerStyrofoam / Polystyrene Food ContainerTritan Plastic Food ContainerPVC / PVDC Plastic Cling WrapHDPE Plastic Food Container (#2)Disposable Aluminum Food ContainerLDPE Zip-Lock Plastic Bag (#4)Rubbermaid Brilliance Food Storage ContainerOXO Good Grips POP ContainerPolypropylene Food Container (#5 PP)
Polycarbonate Plastic Food Container—CompareCompareCompareCompareCompareCompareCompareCompareCompare
Styrofoam / Polystyrene Food ContainerCompare—CompareCompareCompareCompareCompareCompareCompareCompare
Tritan Plastic Food ContainerCompareCompare—CompareCompareCompareCompareCompareCompareCompare
PVC / PVDC Plastic Cling WrapCompareCompareCompare—CompareCompareCompareCompareCompareCompare
HDPE Plastic Food Container (#2)CompareCompareCompareCompare—CompareCompareCompareCompareCompare
Disposable Aluminum Food ContainerCompareCompareCompareCompareCompare—CompareCompareCompareCompare
LDPE Zip-Lock Plastic Bag (#4)CompareCompareCompareCompareCompareCompare—CompareCompareCompare
Rubbermaid Brilliance Food Storage ContainerCompareCompareCompareCompareCompareCompareCompare—CompareCompare
OXO Good Grips POP ContainerCompareCompareCompareCompareCompareCompareCompareCompare—Compare
Polypropylene Food Container (#5 PP)CompareCompareCompareCompareCompareCompareCompareCompareCompare—