Which statement describes Reference Specification?

• A. A specification that calls for a brand and model
• B. A description of performance
• C. A specification that indicates testing methods
• D. A specification which refers to quality standards established by recognized testing authorities or by the federal government

Answer: (D)

Reference specifications rely on external standards set by recognized authorities rather than naming a brand or detailing exactly how products should be tested. The requirement is satisfied by any product that meets the cited standard, not by a specific item. This makes the specification flexible and ensures consistency with widely accepted benchmarks.

So the statement that describes a reference specification is the one that refers to quality standards established by recognized testing authorities or by the federal government. It’s different from calling for a specific brand (that’s prescriptive), describing performance alone (that’s a performance specification), or indicating testing methods (that’s a method specification). In practice, you might see references to standards like ASTM, NFPA, ADA, or other recognized codes that define how products must perform or be evaluated.