Federal regulations · Through 2026-08-25 · Newer source version available

7 CFR 28.303: Standards for length of staple for American upland cotton.

(a) Effective July 12, 1985, standards for the lengths of staple of American upland cotton shall be measurements as determined by the Suter-Webb Duplex Cotton Fiber Sorter in accordance with the test method prescribed in paragraph (c) of this section. Ranges for each official staple length are shown in the table below. Staple standards exceeding 1 1/4 inches, in graduations of thirty-second inches, will be expressed in increments of .041 inches.
[In inches]
Staple length Upper quartile length range
13⁄16 .827-.847
7⁄8 .909-.929
29⁄32 .950-.970
15⁄16 .990-1.010
31⁄32 1.031-1.051
1 1.072-1.092
11⁄32 1.113-1.133
11⁄16 1.154-1.174
13⁄32 1.195-1.215
11⁄8 1.236-1.256
15⁄32 1.277-1.297
13⁄16 1.318-1.338
17⁄32 1.359-1.379
11⁄4 1.400-1.420
(b) Cotton selected for the preparation of practical forms of staple standards shall, to the extent practicable, measure at the mid-point of the appropriate staple range indicated in paragraph (a) of this section.
(c) Length measurements shall be performed in accordance with the “Standard Test Method for Length and Length Distribution of Cotton Fibers (Array Method), ANSI/ASTM D 1440-77 (1982), which is incorporated by reference pursuant to the provisions of 5 U.S.C. 552(a). This standard test method has been adopted by the American Society for Testing and Materials (ASTM) and approved as an American National Standard by the American National Standards Institute. It is published in the “Annual Book of ASTM Standards,” Part 33, volume 07.02. Copies of the ASTM book and copies of ASTM standard D 1440-77 as a separate publication may be obtained from ASTM, Customer Service, 1916 Race Street, Philadelphia, PA 19103. A copy of the ASTM standard test method is also on file at the Office of the Federal Register. A notice of any change in the ASTM standard test method cited herein will be published in the Federal Register.

Where this section sits in the code

Title 7—Agriculture
Subtitle B—Regulations of the Department of Agriculture
CHAPTER I—AGRICULTURAL MARKETING SERVICE (STANDARDS, INSPECTIONS, MARKETING PRACTICES), DEPARTMENT OF AGRICULTURE
SUBCHAPTER A—COMMODITY STANDARDS AND CONTAINER REQUIREMENTS
PART 28—COTTON CLASSING, TESTING, AND STANDARDS
Subpart C—Standards

[In inches]

Staple length Upper quartile length range

13⁄16 .827-.847

7⁄8 .909-.929

29⁄32 .950-.970

15⁄16 .990-1.010

31⁄32 1.031-1.051

1 1.072-1.092

11⁄32 1.113-1.133

11⁄16 1.154-1.174

13⁄32 1.195-1.215

11⁄8 1.236-1.256

15⁄32 1.277-1.297

13⁄16 1.318-1.338

17⁄32 1.359-1.379

11⁄4 1.400-1.420

(b) Cotton selected for the preparation of practical forms of staple standards shall, to the extent practicable, measure at the mid-point of the appropriate staple range indicated in paragraph (a) of this section.

(c) Length measurements shall be performed in accordance with the “Standard Test Method for Length and Length Distribution of Cotton Fibers (Array Method), ANSI/ASTM D 1440-77 (1982), which is incorporated by reference pursuant to the provisions of 5 U.S.C. 552(a). This standard test method has been adopted by the American Society for Testing and Materials (ASTM) and approved as an American National Standard by the American National Standards Institute. It is published in the “Annual Book of ASTM Standards,” Part 33, volume 07.02. Copies of the ASTM book and copies of ASTM standard D 1440-77 as a separate publication may be obtained from ASTM, Customer Service, 1916 Race Street, Philadelphia, PA 19103. A copy of the ASTM standard test method is also on file at the Office of the Federal Register. A notice of any change in the ASTM standard test method cited herein will be published in the Federal Register.

Collected 2026-08-27T02:24:01Z. Source file · JSON

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