What Materials are Safe to Use in a Microwave Oven?
Government of British Colombia – Ministry of Health Services All containers and materials that are identified by the manufacturer as safe to use in a microwave oven are suitable to use in the oven. This identifying information may be on the packaging or on the material itself. If a container does not specifically state that it is microwave safe it still may be useable in the oven. To test the material, place it in the oven along with a cup of cool water and operate the oven on high for 1 minute. If the container is lukewarm or cool it is safe to use. If the container is warm or hot it is not safe to use. In general suitable materials tend to be made of plastic, glass, china cookware, plastic dinnerware, etc. Do not use dishes with metallic rims or cookware with metal parts and avoid using twist-ties. Although aluminum foil is a metal it may sometimes be used safely but only when used as directed by the microwave cookbook or microwave oven instruction book. If recycled plastic container
