Official Grain Grading Guide

Screenings: Grade determination tables

Screenings, grade determination tables

Screenings, standard of quality
Grading factorNo. 1 Feed ScreeningsNo. 2 Feed ScreeningsUncleanedRefuseGrade, if specs not met
Degree of soundnessMust be cool and sweetMust be cool and sweetNo requirementsNo requirements(Grade name), Account Heated, or Fireburnt, or Odour
Minimum quantity of shrunken or broken grain %35No minimumFootnote 1No minimum 
Screenings, maximum tolerances
Grading factorNo. 1 Feed ScreeningsNo. 2 Feed ScreeningsUncleanedRefuseGrade, if specs not met
Ergot %0.10.10.10.1(Grade name) Screenings, Ergoty
Excreta %0.020.020.100.10Sample Screenings, Account Excreta
Other domestic grains %051010Sample Screenings, with composition in remarks
Other large seeds %10No limitFootnote 1No limit 
Sclerotinia %0.250.250.250.25Sample Screenings, Account Sclerotinia
Stones %0.30.30.50.5Sample Screenings, Account Stones
Wild buckwheat %65No limitFootnote 1No limit 
Wild oats %84949No limit 
Wild oat hulls %Not applicableNot applicable1No limit 
Other than hare’s ear or wild mustard seed %11Footnote 1No limit 
Total %
Injurious seeds
22Footnote 1No limit 
Screenings, maximum tolerances included in totals
Grading factorNo. 1 Feed ScreeningsNo. 2 Feed ScreeningsUncleanedRefuseGrade, if specs not met
Straw %0.30.35.0No limit 
Total %Footnote 2
Knuckles and straw
335No limit 
Hulls %11Footnote 1No limit 
Soft earth pellets %1133Sample Screenings, Account Soft Earth Pellets
Total %Footnote 2
Including weed seeds which pass through a No. 4.5 round-hole sieve, chaff, dust
33Footnote 1No limit 
Hares ear or wild mustard seed %22Footnote 1No limit 
Total %Footnote 2
Including canola, rapeseed, wild and domestic mustard seed
610Footnote 1No limit 
Table 2 Notes
Footnote 2

Total includes all factors within this table listed prior to the total.

Return to footnote 2 referrer

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2026-08-01