Stainless Steel Food Storage Containers
Durable, non-toxic stainless steel containers, often with platinum-grade silicone lids. Ideal for meal prep, lunchboxes, and freezer storage.
How scores are calculated
Materials (40%): How plastic-free the product is — raw materials, construction, and coatings.
Packaging (20%): Is the product packaged in plastic? Is it recyclable?
Transparency (20%): Does the brand disclose ingredients, sourcing, and manufacturing?
Durability (20%): How long does it last? Longer-lasting products reduce plastic waste over time.
This is a rating of this specific product only — not the company. Other products from this brand may score differently.
Last updated: April 8, 2026
Stainless steel is highly durable, non-toxic, and recyclable. Platinum-grade silicone lids are also considered safe and plastic-free. Some stainless steel contains nickel, which can be a concern for sensitive individuals.
Why We Rated It This Way
U Konserve / Lunchbots's Stainless Steel Food Storage Containers is made from 18/8 Food-Grade Stainless Steel (container), Platinum-Grade Silicone (lids for U Konserve). Certifications: Certified B Corporation (U Konserve), 1% for the Planet (U Konserve), FDA Standards (silicone).
Chemical & Health Analysis
Each chemical of concern is broken down below — what it is, where it comes from in this product, what it does to the body, and who is most at risk.
Various plastic chemicals
U Konserve / Lunchbots Stainless Steel Food Storage Containers
Potential nickel leaching from 18/8 stainless steel for highly sensitive individuals (e.g., Lunchbots).
All health claims are based on published, peer-reviewed research from the NIH, WHO, IARC, and peer-reviewed journals. This information is for educational purposes and does not constitute medical advice.
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