---
kind: "section"
citation: "7 C.F.R. § 51.3417"
title: "7"
number: "51.3417"
heading: "Optional test for specific gravity."
url: "https://uscodex.org/cfr/7/51.3417"
---

# §51.3417. Optional test for specific gravity.


Tests to determine specific gravity shall be made in accordance with the procedures set forth in this section.

- (a) The potatoes used for such determinations shall be:
  - (1) **Taken at random from a composite sample drawn from containers representative of the lot.**
  - (2) **A comparable sample from a bulk load or storage bin.**
  - (3) From a portion of the divided sample initially drawn or submitted for determination of grade or contract compliance.
  - (4) **Representative of the lot with respect to size and quality.**
- (b) Specific gravity shall be determined by either;
  - (1) **Calculation from the weights of the sample in air and in water made with USDA approved equipment.** The reading obtained from each test shall be corrected for temperature variations using Table I.
  - (2) **A hydrometer specifically designed for determining the specific gravity of potatoes.** 3

## Notes

### Source

Source: 48 FR 10802, Mar. 15, 1983, unless otherwise noted.

### Authority

Authority: 7 U.S.C. 1621-1627.