Official Grain Grading Guide
Wheat: Primary grade determination tables for Canada Western Extra Strong (CWES) wheat
Wheat, Canada Western Extra Strong (CWES)
Samples of CWES will be graded no lower than No. 2 CWES on account of mildew
| Grading factor | No. 1 CWES | No. 2 CWES | CW Feed | Grade, if specs for CW Feed not met |
|---|---|---|---|---|
| Degree of soundnessFootnote 1 | 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 higher grades on account of light weight or damaged kernels | |
| Minimum test weight kg/hL (g/0.5 L) | 75 (365) | 73 (355) | 65 (315) | Wheat, Sample CW Account Light Weight |
| Minimum protein % | 10.0 | No minimum | No minimum | |
| Variety | Any variety of the class CWES designated as such by order of the Commission | Any variety of the class CWES 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
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| Grading factor | No. 1 CWES | No. 2 CWES | CW Feed | Grade, if specs for CW Feed not met |
|---|---|---|---|---|
| Ergot % | 0.04 | 0.04 | 0.10 | Wheat, Sample CW Account Ergot |
| Excreta % | 0.01 | 0.03 | 0.03 | Wheat, Sample CW Account Excreta |
| Matter other than cereal grains % | 0.2 | 0.3 | 1.0 | Wheat, Sample CW Account Admixture |
| Sclerotinia % | 0.04 | 0.04 | 0.10 | Wheat, Sample CW Account Admixture |
| Stones % | 0.03 | 0.06 | 0.10 | 2.5% or less - Rejected (grade) Account Stones Over 2.5% - Wheat, Sample Salvage |
| Total % Foreign material | 0.8 | 1.5 | 10.0 | See Mixed grain |
| Grading factor | No. 1 CWES | No. 2 CWES | CW Feed | Grade, if specs for CW Feed not met |
|---|---|---|---|---|
| Contrasting classes % | 1.5 | 2.5 | 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 classesFootnote 2 | 3 | 5 | 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 % | 0.1 | 0.1 | 2.0 | Wheat, Sample CW Account Stained Kernels |
| Degermed % | 7 | 13 | No limit | |
| Fireburnt % | 0.0 | 0.0 | 2.0 | Wheat, Sample CW Account Fireburnt |
| Fusarium damage % | 1.0 | 1.0 | 4.0 | 10% or less - Wheat, Sample CW Account Fusarium Damage Over 10% - Wheat Commercial Salvage |
| Grass green % | 2 | 10 | No limit | |
| Insect damage % | 3 | 8 | No limit | |
| Binburnt, severely mildewed, rotted, mouldy % | 0.02 | 0.03 | 2.50 | Wheat, Sample CW Account Heated |
| Total % Heated, binburnt, severely mildewed, rotted, mouldy | 0.4 | 1.0 | 2.5 | Wheat, Sample CW Account Heated |
| Natural stain % | 2 | 5 | No limit | |
| Pink % | 5 | 10 | No limit | |
| Sawfly, midge % | 2 | 5 | No limit | |
| Shrunken % | 3 | 3 | No limit | |
| Broken % | 7 | 7 | 13 | Sample Broken Grain |
| Total % Shrunken and broken | 8 | 8 | No limit within broken tolerances | |
| Smudge % | 1 | Consider overall appearance | No limit | |
| Total % Smudge and blackpoint | 15 | Consider overall appearance | No limit | |
| Severely sprouted % | 0.1 | 0.3 | No limit | |
| Total % Sprouted | 0.5 | 2.0 | No limit | |
Table 2 Notes
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