[Code of Federal Regulations]
[Title 7, Volume 7, Parts 700 to 899]
[Revised as of January 1, 2001]
From the U.S. Government Printing Office via GPO Access
[CITE: 7CFR801.7]

[Page 591-592]
 
                          TITLE 7--AGRICULTURE
 
  CHAPTER VIII--GRAIN INSPECTION, PACKERS AND STOCKYARD ADMINISTRATION 
      (FEDERAL GRAIN INSPECTION SERVICE), DEPARTMENT OF AGRICULTURE
 
PART 801--OFFICIAL PERFORMANCE REQUIREMENTS FOR GRAIN INSPECTION EQUIPMENT--Table of Contents
 
Sec. 801.7  Reference methods and tolerances for near-infrared spectroscopy (NIRS) analyzers.

    (a) Reference methods. (1) The chemical reference protein 
determinations used to reference and calibrate official NIRS instruments 
shall be performed in accordance with ``Comparison of Kjeldahl Method 
for Determination of Crude Protein in Cereal Grains and Oilseeds with 
Generic Combustion Method: Collaborative Study,'' July/August 1993, 
Ronald Bicsak, Journal of AOAC International Vol. 76, No. 4, 1993, and 
subsequently approved by the AOAC International as the Combustion 
method, AOAC International Method 992.23. This incorporation by 
reference was approved by the Director of the Federal Register in 
accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be 
obtained from Director, Technical Services Division, Federal Grain 
Inspection Service, 10383 North Executive Hills Blvd., Kansas City, MO 
64153-1394. Copies may be inspected at the above address or at the 
Office of the Federal Register, 800 North Capitol Street, NW., 7th 
Floor, Suite 700, Washington, DC 20408.
    (2) The chemical reference starch determination used to reference 
and calibrate official NIRS instruments shall be performed in accordance 
with the Corn Refiners Association Method A-20, Analysis for Starch in 
Corn, Second revision, April 15, 1986, Standard Analytical Methods of 
the Member Companies of the Corn Refiners Association, Inc. This 
incorporation by reference was approved by the Director of the Federal 
Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies 
may be obtained from Director, Technical Services Division, Federal 
Grain

[[Page 592]]

Inspection Service, 10383 North Executive Hills Blvd., Kansas City, MO 
64153-1394. Copies may be inspected at the above address or at the 
Office of the Federal Register, 800 North Capitol Street, NW., 7th 
Floor, Suite 700, Washington, DC 20408.
    (b) Tolerances--(1) NIRS wheat protein analyzers. The maintenance 
tolerances for the NIRS analyzers used in performing official 
inspections for determination of wheat protein content shall be 
0.15 percent mean deviation from the national standard NIRS 
instruments, which are referenced and calibrated to the Combustion 
method, AOAC International Method 992.23.
    (2) NIRS soybean oil and protein analyzers. The maintenance 
tolerances for the NIRS analyzers used in performing official 
inspections for determination of soybean oil shall be 0.20 
percent mean deviation from the national standard NIRS instruments, 
which are referenced and calibrated to the FGIS solvent oil extraction 
method; and for determination of protein content shall be 
0.20 percent mean deviation from the national standard NIRS 
instruments, which are referenced and calibrated to the Combustion 
method, AOAC International Method 992.23.
    (3) NIRS corn oil, protein, and starch analyzers. The maintenance 
tolerances for the NIRS analyzers used in performing official 
inspections for determination of corn oil shall be 0.20 
percent mean deviation from the national standard NIRS instruments, 
which are referenced and calibrated to the FGIS solvent oil extraction 
method; for determination of protein content shall be 0.30 
percent mean deviation from the national standard NIRS instruments, 
which are referenced and calibrated to the Combustion method, AOAC 
International Method 992.23; and for determination of starch content 
shall be 0.35 percent mean deviation from the national 
standard NIRS instruments, which are referenced and calibrated to the 
Starch method, Corn Refiners Association Method A-20.

[63 FR 35505, June 30, 1998]