What term is used for a device or material that has been evaluated and affixed with a label by a recognized testing agency?

The term that accurately describes a device or material that has been evaluated and affixed with a label by a recognized testing agency is "Labeled." This indicates that the product has undergone testing for safety and compliance and has met specific criteria set forth by the agency. A label signifies that the item adheres to certain standards, which provides confidence to consumers and professionals regarding its use.

"Approved" refers more broadly to an endorsement by authorities or standards organizations and doesn't specifically indicate that a label has been affixed. "Certified" can imply that a product meets certain standards, but it often pertains to the qualification of a process rather than the physical labeling of a product itself. "Standardized" usually refers to processes or systems that adopt certain established norms, not specifically to the labeling of evaluated products. Thus, "Labeled" is the most precise term in this context.