Weighing Services

All exported grain must be officially Class X weighed. Domestic shipments may be Class X or Class Y weighed. Class X weighing is 100 percent supervised by licensed official personnel, who then issue an official "white" certificate. Class Y weighing is performed by elevator personnel who do the weighing and issue "yellow" certificates.

Official Weighing Class "X"

Official Weighing is when official personnel (GIPSA, State, or private employees licensed by GIPSA) determine and certify the quantity of a lot of grain. The official agency in the elevator's area weighs or observes the weighing by physical supervision and monitors the discharge of grain through the scales, out of the elevator, into a carrier.

Supervision of Weighing Class "Y"

Upon request of an applicant, GIPSA can provide Class Y (Official) weighing service under the United States Grain Standards Act (Act). Approved elevator weighing personnel perform the weighing using GIPSA approved scales under GIPSA supervision. Supervision is provided by GIPSA employees or a designated agency in an elevator's area. They (designated agencies) establish the cost for this service and submit their fees to GIPSA for approval.

Requesting Services

After an elevator decides it wants service, a written request to its local GIPSA FGIS Field Office must include:

  • A completed "Application for Approval to Operate as a Weighing Facility" Form FGIS-1001 signed by the elevator showing the names of all weighers;
  • For Class Y weighing, an agreement/commitment between the elevator and Designated agency on the scope of service, i.e., on how they will/will not notify the official agency when Class Y weighing, types of movements covered, etc.;
  • Class X service is requested on a case-by-case basis, in the same way grain inspection services are obtained.


To qualify for official weighing, the elevator must comply with the applicable requirements of the regulations and instructions under the Act. This includes:

  • Using and maintaining suitable grain handling equipment and accurate scales as described in The National Conference on Weights and Measures (NCWM) publication Handbook 44 , "Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices," GIPSA regulations, and instructions;
  • Permitting only trained, competent weighers to operate the scales and grain handling equipment when Class X or Y weighing (as declared on the form FGIS-1001) and;
  • Following all procedures in accordance with the regulations and instructions of the Act. This means following the weighing practices and certifying results as directed in the GIPSA Weighing Handbook, Chapters 1 and 2.

For Class X or Y certification approval, the field office or designated agency will survey the grain flow system to assure that all grain weighed can be delivered to the carrier without loss. Also, a GIPSA scale specialist will test and assure your scale (s) meets official and commercial requirements.

If you would like additional information, please contact Marcus Harwitz, FGIS, Policies, Procedures, and Market Analysis Branch, via e-mail at Marcus.Harwitz@usda.gov or by telephone at 708-458-1655.

Review of Weighing (Appeals)

Weight Complaints (Review of Weighing)

A review of weighing service is a formal review of weighing documentation pertaining to a specific weight certificate. The review includes a detailed evaluation of weight logs, scale tapes, scale history, and other documentation and, if necessary, consultation with individuals involved with the actual weighing. A scale testing official does this review if possible.

The review of weighing service, is performed when requested by an interested person on domestic shipments. An "interested person" is defined as any person having a contract or other financial interest in grain as the owner, seller, purchaser, warehouseman, carrier, or otherwise. Persons who are employed by or represent carriers in the capacity of investigating claims against the carrier regarding the weight are considered "interested persons."

Export weight inquiries are forwarded by field offices to FGIS' International Monitoring Staff.

Request for Review of Weighing

Requests must be filed within 90 days after the date of the Class X or Class Y weighing service with the FGIS field office or agency that conducted the original service.

The request is considered filed when the oral or written request is received by the field office or agency.

The review of weighing is conducted by the office that performed the official service.

Application Requirements

  • Name and mailing address of applicant.
  • Name(s) and address(es) of interested persons.
  • Carrier identification, quantity, and the official service location.
  • Copy of original weight certificate.