; (iii) composed of materials that do not contain— (I) toxic heavy metals; (II) pathogens; (III) additives; or (IV) toxic substances (as defined in section 12000 of the Solid Waste Disposal Act); and (iv) supported by adequate and convenient availability of, and retail infrastructure for, bulk or large format packaging that may be refilled to ensure the packaging or food service product can be conveniently and safely reused or refilled by the consumer for multiple cycles, as needed. (4) Single-use plastic (A) In general The term single-use plastic means a plastic product or packaging that— (i) is routinely disposed of, recycled, or otherwise discarded after a single use; or (ii) is not sufficiently durable or washable to be, or is not intended to be, reusable or refillable. (B) Exclusions The term single-use plastic does not include— (i) medical equipment, medical devices, consumer personal protective equipment, or other products determined by the Secretary of Health and Human Services to necessarily be made of plastic for the protection of public health or for people with disabilities; (ii) packaging that is— (I) for any product described in clause (i) that is determined by the Secretary of Health and Human Services to necessarily be used for the protection of public health or for people with disabilities; or (II) used for the shipment of hazardous materials, such that the packaging is prohibited from being composed of used materials under section 178.509 or 178.522 of title 49, Code of Federal Regulations (as in effect on the date of enactment of this Act)