### Question
How does Subpart C—Specific Nutrition Labeling Requirements and Guidelines define diameter?


### Answer
Under *21 CFR § 101.36*, **diameter** is defined as:

> the over-all distance between the tips of opposing centrifuge tubes in operating position.

#### Citation:
  - *21 CFR § 101.36*
  - Heading: **Subpart C—Specific Nutrition Labeling Requirements and Guidelines**

