Official Grain Grading Guide
Wheat: Commercially clean determination table
| Class | CWRS | CWHWS | CWAD | CWRW | CWSWS | CWES | CPSR | CPSW | CNHR | All classes (except CWAD and CWSP) | CWSP | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grade No. | 1, 2, 3 | 1, 2, 3 | 1, 2, 3 | 4 | 5 | 1, 2,3 | 1, 2, 3 | 1, 2 | 1, 2 | 1, 2 | 1, 2, 3 | CW Feed | 1, 2 |
| Broken grain through No. 5 buckwheat sieve (Exiting Primary %) | 0.3 | 0.3 | 0.3 | 0.5 | 0.5 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.5 | 0.5 |
| Broken grain through No. 5 buckwheat sieve (Exiting Terminal %) | 0.35 | 0.35 | 0.35 | 0.5 | 0.5 | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | 0.35 | 0.5 | 0.5 |
| Broken grain through No. 5 buckwheat sieve (Exiting St. Lawrence Terminal %)Footnote 1 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Class | CWRS | CWHWS | CWAD | CWRW | CWSWS | CWES | CPSR | CPSW | CNHR | All classes (except CWAD and CWSP) | CWSP | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grade No. | 1, 2, 3 | 1, 2, 3 | 1, 2, 3 | 4 | 5 | 1, 2,3 | 1, 2, 3 | 1, 2 | 1, 2 | 1, 2 | 1, 2, 3 | CW Feed | 1, 2 |
| Small seeds % | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Attrition % | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Roughage % | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Total small seeds, attrition and roughage % | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Large seeds % | 0.2 | 0.2 | 0.2 | 0.2 | 0.5 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.5 | 0.5 |
| Wild oats % | 0.05 | 0.05 | 0.15 | 0.15 | 0.15 | 0.10 | 0.05 | 0.10 | 0.10 | 0.10 | 0.05 | 0.1 | 0.1 |
| Total small seeds, large seeds and wild oats % | 0.2 | 0.2 | 0.2 | 0.2 | 0.5 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.5 | 0.5 |
| Total small seeds, large seeds, wild oats, roughage, and broken grain though No. 5 buckwheat sieve % | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
Note: For shipments of eastern wheat classes, commercial cleanliness specifications listed in the CWRS commercially clean determination table is to be used.