Canola and rapeseed – Chapter 10 | Official Grain Grading Guide

Export shipments

Export shipments can be commercially clean or not commercially clean.

Commercially clean

Shipments defined as commercially clean may contain material as follows.

Definition of commercial cleanliness, canola
Grade name Material other than canola
remaining on top of round-hole sieve %
Total net dockage %
Roughage material
such as wild oats, seed pods, knuckles
Total
No. 1 Canada 0.3 0.5 2.5
No. 2 Canada 0.3 0.5 2.5
No. 3 Canada 0.3 0.5 2.5

Dockage is reported to the nearest

  • 0.1% for samples representing shipments loaded from a single terminal elevator
  • 0.01% for composite samples representing shipments loaded from more than one terminal elevator

A deduction for broken and reasonably sound canola handpicked from the material and removed as dockage is allowed

  • On shipments not for direct export, of up to 0.50%
  • On shipments for direct export, of up to 0.75%
  • On shipments ex primary elevators, of up to 0.50%

These deductions are applied to determine total net dockage for commercially clean shipments.

Not commercially clean (NCC)

Shipments that do not meet the standards for commercial cleanliness are referred to as not commercially clean. Such shipments are allowed only with the permission of the Canadian Grain Commission.

For samples representing not commercially clean shipments approved by the Canadian Grain Commission for shipment from terminal elevators, dockage is reported to the nearest

  • 0.1% for samples representing shipments loaded from a single terminal elevator
  • 0.01% for composite samples representing shipments loaded from more than one terminal elevator

Instead of the allowances for broken seed in commercially clean shipments, a direct deduction of up to 0.2% is applied to establish net dockage for direct shipments only.

Determination of dockage

Follow procedures for normal cleaning, with the Carter dockage tester set up as follows:
Feed control #3
Air control #5
Riddle No. 000
Top sieve Blank tray
Centre sieve None
Bottom sieve None
Sieve cleaner Off
You will also need the following hand sieves
Round-hole sieves Slotted sieves
No. 5 No. .028
No. 5.5 No. .032
No. 6  
No. 6.5  
No. 7  
No. 7.5  

Composition of dockage

In export grade canola, dockage consists of

  • Material other than canola that passes over the No. 000 riddle or remains on top of the round-hole sieve
  • Material that passes through the No. 028 or .032 slotted sieve
  • Material removed by aspiration
  • less the applicable allowance of broken and reasonably sound canola deducted from the slotted and/or aspiration
  • Conspicuous admixture handpicked from the cleaned sample

Grading

Canola on export is graded in accordance with export specifications. Where there are no export specifications, the primary specifications are used.