Official Grain Grading Guide

Wheat: Export grade determination table for Canada Western Red Spring (CWRS) wheat

Chapter 4. Wheat (PDF, 2 MB)

Wheat, Canada Western Red Spring (CWRS)

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Download a poster version of the export grade determination table for CWRS, 61 x 91 cm (24 x 36 in) (PDF, 205 KB)

Samples of CWRS will be graded no lower than No. 3 CWRS on account of mildew

Wheat, Canada Western Red Spring (CWRS), standard of quality
Grading factor	No. 1 CWRS	No. 2 CWRS	No. 3 CWRS	CW Feed
Degree of soundness^{Footnote 1}	Reasonably well matured, reasonably free from damaged kernels	Fairly well matured, may be moderately bleached or frost-damaged, reasonably free from severely damaged kernels	May be frost-damaged, immature or weather-damaged, moderately free from severely damaged kernels	Reasonably sweet, excluded from other grades of wheat on account of damaged kernels
Minimum test weight kg/hL (g/0.5 L)	79 (385)	77 (375)	76 (370)	73 (355)
Minimum hard vitreous kernels %	65	No minimum	No minimum	No minimum
Minimum protein %	10.0	No minimum	No minimum	No minimum
Variety	Any variety of the class CWRS designated as such by order of the Commission	Any variety of the class CWRS designated as such by order of the Commission	Any variety of the class CWRS designated as such by order of the Commission	Any class or variety of wheat excluding amber durum and any variety of the class CWSP
Table 1 Notes Footnote 1 See Frost (FR) and Mildew (MIL) for applicable standard Return to footnote 1 referrer

Wheat, Canada Western Red Spring (CWRS), foreign material
Grading factor	No. 1 CWRS	No. 2 CWRS	No. 3 CWRS	CW Feed
Ergot %	0.04	0.04	0.04	0.10
Excreta %	0.01	0.01	0.01	0.03
Matter other than cereal grains %	0.2	0.3	0.5	1.0
Other cereal grains %	0.4	0.8	1.3	5.0
Sclerotinia %	0.04	0.04	0.04	0.10
Stones %	0.03	0.03	0.06	0.10
Total % Mineral matter including stones	0.06	0.10	0.10	0.25
Total % Foreign material^{Footnote 2}	0.4	0.8	1.3	5.0
Table 2 Notes Footnote 2 Total foreign material (TFM) includes all components in the commercially clean determination table except broken wheat passing through the No.5 buckwheat sieve Return to footnote 2 referrer

Wheat, Canada Western Red Spring (CWRS), grading factors
Grading factor	No. 1 CWRS	No. 2 CWRS	No. 3 CWRS	CW Feed
Artificial stain, no residue %	0.0	0.1	0.1	2.0
Binburnt, severely mildewed, rotted, mouldy %	0.01	0.02	0.03	2.50
Total % Heated, binburnt, severely mildewed, rotted, mouldy	0.1	0.4	1.0	2.5
Contrasting classes %	0.5	1.5	2.5	10%, either alone or in combination with each other, of amber durum and any variety of the class CWSP
Total % Wheats of other classes or varieties and contrasting classes ^{Footnote 3}	1.5	3.0	5.0	10%, either alone or in combination with each other, of amber durum and any variety of the class CWSP
Dark immature %	1	3	10	No limit
Degermed %	4	7	13	No limit
Fireburnt %	0.0	0.0	0.0	2.0
Fusarium damage %	0.3	0.8	1.5	4.0
Grass green %	0.8	2.0	10.0	No limit
Insect damage %	1	3	6	No limit
Natural stain %	1	2	5	No limit
Pink %	2	5	10	No limit
Sawfly, midge %	2	5	10	No limit
Shrunken %	4	4	4	4
Broken %	5	6	7	13
Total % Shrunken and broken	7	8	9	15
Smudge %	0.3	1.0	5.0	No limit
Total % Smudge and blackpoint	10	20	35	No limit
Severely sprouted %	0.1	0.2	0.3	No limit
Total % Sprouted	0.5	1.0	3.0	No limit
Table 3 Notes Footnote 3 See working tolerance for Wheats of Other Classes or Varieties (WOOC) Return to footnote 3 referrer

2026-09-11