Official Grain Grading Guide

Wheat: Primary grade determination tables for Canada Western Red Winter (CWRW) wheat

Chapter 4. Wheat (PDF, 2 MB)

Wheat, Canada Western Red Winter (CWRW)

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

Wheat, Canada Western Red Winter (CWRW), standard of quality
Grading factor	No. 1 CWRW	No. 2 CWRW	No. 3 CWRW	CW Feed	Grade, if specs for CW Feed not met
Degree of soundness^{Footnote 1}	Reasonably well matured, reasonably free from damaged kernels	Fairly well matured, may be moderately bleached or frost damaged, reasonable 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 (386)	76 (370)	74 (360)	65 (315)	Wheat, Sample CW Account Light Weight
Minimum protein %	11.0	11.0	No minimum	No minimum
Variety	Any variety of the class CWRW designated as such by order of the Commission	Any variety of the class CWRW designated as such by order of the Commission	Any variety of the class CWRW 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 Mildew (MIL) for applicable standard. Return to footnote 1 referrer

Wheat, Canada Western Red Winter (CWRW), foreign material
Grading factor	No. 1 CWRW	No. 2 CWRW	No. 3 CWRW	CW Feed	Grade, if specs for CW Feed not met
Ergot %	0.04	0.04	0.04	0.10	Wheat, Sample CW Account Ergot
Excreta %	0.01	0.01	0.01	0.03	Wheat, Sample CW Account Excreta
Matter other than cereal grains %	0.2	0.3	0.5	1.0	Wheat, Sample CW Account Admixture
Sclerotinia %	0.04	0.04	0.04	0.10	Wheat, Sample CW Account Admixture
Stones %	0.03	0.06	0.06	0.10	2.5% or less - Rejected (grade) Account Stones Over 2.5% - Wheat, Sample Salvage
Total % Foreign material	0.4	0.7	1.3	10.0	See Mixed grain

Wheat, Canada Western Red Winter (CWRW), grading factors
Grading factor	No. 1 CWRW	No. 2 CWRW	No. 3 CWRW	CW Feed	Grade, if specs for CW Feed not met
Contrasting classes %	1	2	3	10%, either alone or in combination with each other, of amber durum and any variety of the class CWSP	Over 10%, either alone or in combination with each other, of amber durum and any variety of the class CWSP - Wheat, Sample CW Account Admixture
Total % Wheats of other classes or varieties and contrasting classes ^{Footnote 2}	3	5	10	10%, either alone or in combination with each other, of amber durum and any variety of the class CWSP	Over 10%, either alone or in combination with each other, of amber durum and any variety of the class CWSP - Wheat, Sample CW Account Admixture
Artificial stain, no residue %	0.0	0.1	0.1	2.0	Wheat, Sample CW Account Stained Kernels
Blackpoint %	10	20	35	No limit
Natural stain %	1	2	5	No limit
Shrunken %	3	3	3	No limit
Broken %	3	5	8	13	Sample Broken Grain
Total % Shrunken and broken	3	5	8	No limit within broken tolerances
Table 2 Notes Footnote 2 See working tolerance for Wheats of Other Classes or Varieties (WOOC). Return to footnote 2 referrer

Wheat, Canada Western Red Winter (CWRW), grading factors included in total damage
Grading factor	No. 1 CWRW	No. 2 CWRW	No. 3 CWRW	CW Feed	Grade, if specs for CW Feed not met
Binburnt, severely mildewed, rotted, mouldy %	0.01	0.01	0.03	2.50	Wheat, Sample CW Account Heated
Total % Heated, binburnt, severely mildewed, rotted, mouldy	0.1	0.1	0.5	2.5	Wheat, Sample CW Account Heated
Fireburnt %	0.0	0.0	0.0	2.0	Wheat, Sample CW Account Fireburnt
Fusarium damage %	0.8	1.0	1.5	4.0	Wheat, Sample CW Account Fusarium Damage Over 10%- Wheat, Commercial Salvage
Sawfly, midge %	1	5	7	No limit
Penetrated smudge %	0.1	1.0	3.0	No limit
Total % Smudge	0.3	3.0	5.0	No limit
Severely sprouted %	0.1	0.2	0.3	No limit
Total % Sprouted	0.5	1.0	2.5	No limit
Total % Damage	2	5	7	Not applicable

2026-08-01