Double Wall Vacuum Insulated Stainless Steel Food Canister Container with Leak Proof Lid vs Latchlok Click Food Storage Container with Divider – 6.2 Cups: which is safer?

Where these two actually differ

• We flag Silicone gasket degradation, Bacterial growth in vacuum seal and Surface corrosion under acidic conditions on the Klean Kanteen and not on the Prepara.
• We flag BPA and alternative plasticizers (BPS, phthalates, etc.), Microplastics from polymer wear and degradation, Leaching from polymer or coatings under thermal stress and Polymer degradation and discoloration over time on the Prepara and not on the Klean Kanteen.
• The Klean Kanteen is Stainless steel body, silicone gasket lid seal where the Prepara is plastic (BPA-free claimed by brand; composition unspecified), which is most of the difference in these two grades.
• The gap is 30 points, wide enough that this is not a close call, and the Klean Kanteen is the one to buy.
• We are less certain about the Prepara grade, at 45% confidence against 82%, because it discloses less.