Preserve products are made with plastics approved by the FDA for use at temperatures consistent with reheating food in the microwave. We’ve also conducted microwave durability testing on our food storage containers with a leading consumer products testing agency. This test confirms that Preserve products do not melt, get too hot or otherwise deform when used to reheat foods in the microwave; it’s the same testing that other leading consumer products use to determine that their products can be labeled “microwave safe.”
We chose to use the term “microwave durable” rather than “microwave safe” because we believe that even though polypropylene is one of the safest plastics in use, the decision of whether or not to microwave plastic is ultimately a personal one.
Preserve products do not get too hot, melt, or otherwise deform during repeated dishwashing. They have been tested in commercial and home dishwashers. The plastics from which our products are made are also approved by the FDA for use at temperatures typically reached in home dishwashers.