Official Grain Grading Guide

Wheat: Export grade determination tables for Canada Western Soft White Spring (CWSWS) wheat

Chapter 4. Wheat (PDF, 2 MB)

Wheat, Canada Western Soft White Spring (CWSWS)

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

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

Wheat, Canada Western Soft White Spring (CWSWS), standard of quality
Grading factor	No. 1 CWSWS	No. 2 CWSWS	No. 3 CWSWS	CW Feed
Degree of soundness^{Footnote 1}	Reasonably well matured, reasonably free from damaged kernels	Fairly well matured, may be moderately weather-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 higher grades on account of light weight or damaged kernels
Minimum test weight kg/hL (g/0.5 L)	78 (380)	75 (365)	75 (365)	73 (355)
Variety	Any variety of the class CWSWS designated as such by order of the Commission	Any variety of the class CWSWS designated as such by order of the Commission	Any variety of the class CWSWS 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 Soft White Spring (CWSWS), foreign material
Grading factor	No. 1 CWSWS	No. 2 CWSWS	No. 3 CWSWS	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 %	0.8	1.0	1.5	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}	0.8	1.0	1.5	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 Soft White Spring (CWSWS), grading factors
Grading factor	No. 1 CWSWS	No. 2 CWSWS	No. 3 CWSWS	CW Feed
Wheats of other classes or varieties %^{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
Artificial stain, no residue %	0.0	0.1	0.1	2.0
Degermed %	4	7	10	No limit
Fireburnt %	0.0	0.0	0.0	2.0
Fusarium damage %	1.5	1.5	1.5	4.0
Grass green %	0.8	2.0	4.0	No limit
Insect damage %	1	3	5	No limit
Binburnt, severely mildewed, rotted, mouldy %	0.01	0.01	0.02	2.50
Total % Heated, binburnt, severely mildewed, rotted, mouldy	0.1	0.1	0.4	2.5
Natural stain %	1	2	5	No limit
Pink %	3	6	10	No limit
Sawfly, midge %	2	8	15	No limit
Shrunken %	3	3	3	4
Broken %	5	6	7	13
Total % Shrunken and broken	7	8	9	15
Penetrated smudge %	0.1	0.5	1.0	No limit
Total % Smudge	0.3	1.0	3.0	No limit
Total % Smudge and blackpoint	10	20	35	No limit
Severely sprouted %	0.1	0.3	0.5	No limit
Total % Sprouted	1.0	5.0	8.0	No limit
Table 2 Notes Footnote 3 See working tolerance for Wheats of Other Classes or Varieties (WOOC) Return to footnote 3 referrer

2026-08-01