### Question
How is the term standard reference data defined?


### Answer
The term **standard reference data** is defined in *15 U.S.C. § 290a* as the following:

> quantitative information, related to a measurable physical or chemical property of a substance or system of substances of known composition and structure, which is critically evaluated as to its reliability under section 290b of this title

#### Citation:
  - *15 U.S.C. § 290a*
  - Heading: **CHAPTER 7A-STANDARD REFERENCE DATA PROGRAM**

