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Domestic mustard seed – Chapter 12
Official Grain Grading Guide



Primary and export grade determinants tables – Oriental domestic mustard seed

Domestic Mustard Seed, Oriental, Canada (CAN)

Grade name Standard of quality Damage
Degree of soundness Other classes % ( * ) Distinctly green % Heated % Total %
No. 1 Canada Reasonably well matured, sweet, good natural colour 0.5 1.5 0.10 1.5
No. 2 Canada Fairly well matured, sweet, reasonably good colour 2 1.5 0.20 3
No. 3 Canada May have the natural odour associated with low-quality seed not any odour that would indicate serious deterioration 5 3.5 0.5 5
No. 4 Canada May have the natural odour associated with low-quality seed not any odour that would indicate serious deterioration 10 3.5 1 10
Grade, if No. 4 specs not met   Over 10%—use all other grading criteria and grade as Domestic Mustard Seed (grade) Mixed Domestic Mustard Seed, Sample Canada Oriental Account Damaged Domestic Mustard Seed, Sample Canada Oriental Account Heated Domestic Mustard Seed, Sample Canada Oriental Account Damaged
Grade name Inconspicuous admixture % Conspicuous inseparable seeds
Distinctly detrimental Total %
Cow cockle % Sclerotinia % Total distinctly detrimental %
No. 1 Canada 0.5 0.10 0.10 0.10 0.3
No. 2 Canada 1.0 0.20 0.20 0.20 0.5
No. 3 Canada 1.0 0.3 0.3 0.3 0.7
No. 4 Canada 1 1 1 1 3
Grade, if No. 4 specs not met Domestic Mustard Seed, Sample Canada Oriental Account Admixture
Grade name Ergot % Excreta % Soft earth pellets % Stones %
No. 1 Canada 0.05 1 K 0.01 0.05
No. 2 Canada 0.05 1 K 0.20 0.05
No. 3 Canada 0.05 1 K 0.3 0.05
No. 4 Canada 0.05 0.005 1 0.1
Grade, if No. 4 specs not met Domestic Mustard Seed, Sample Canada Oriental Account Ergot Domestic Mustard Seed, Sample Canada Oriental Account Excreta Domestic Mustard Seed, Sample Canada Oriental Account Admixture 2.5% or less—Domestic Mustard Seed, Rejected (grade) Oriental Account Stones, or Domestic Mustard Seed, Sample Canada Oriental Account Stones. Over 2.5%—Domestic Mustard Seed, Sample Salvage

K Number of kernel-sized pieces in 500 g

( * ) See working tolerance for “Other Classes”

Note: The class, whether yellow, oriental, brown or mixed, is added to the grade name.