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Know Your Grade

Sampling

Ensure a representative sample

Ensuring a representative sample is the most important step of the grading process, whether storing canola on-farm or delivering to an elevator. This sample is a proxy for your entire delivery. It’s used to determine dockage and grade and, if required, to request a third-party opinion.   

Did you know? Grain harvested from a seemingly uniform field can have varying grades and quality characteristics, resulting in differences within a bin/truck or from one bin/truck to another.

Sampling harvest

Sampling procedures on-farm 

To ensure the sample fully represents the grain being stored:

  • Get in the habit of preparing a sample of the canola that goes into each bin.
  • Take samples from the entire truck (or trucks). Collect samples at regular intervals from start to finish, or position the truck for the probe to optimally collect the sample, etc.

To prepare a sample:

  • Use a grain scoop to take samples at regular intervals when filling the bin;
  • In a pail, thoroughly mix the samples;
  • Divide and reduce to the specified amount;
  • Store in a moisture-proof container and label appropriately. 

Find detailed instructions on representative grain sampling on the Canadian Grain Commission’s (CGC) website.

Sampling procedures at a licensed elevator 


For what to expect at the Elevator, the CGC's Guide to Taking a Representative Sample and Sampling Systems Handbook and Approval Guide outline approved sampling equipment, oversight and monitoring requirements, and recommended sampling methods (manual or probe sampling).  

To be considered representative, the CGC recommends sampling to the maximum depth and a minimum of 8 samples for a single truck and 10 for a partitioned truck or truck and trailer. Samples should be taken from each corner, the walls, and the centre. 

The CGC recommends the following sampling pattern:

Sampling diagram

Source: Canadian Grain Commission

The sample can be taken manually or using a pneumatic truck probe. Watch CGC’s video on Taking a Representative Sample.

Sample assessment in advance 

Knowing the quality of your canola prior to sale and delivery should be a core element of your marketing plan. This knowledge helps you in your negotiations with grain buyers, provides confidence when asking for a second opinion, and helps maximize the value of your entire crop, particularly if quality varies by field. 

Also, if you use a custom hauler, knowing the quality in advance makes everything more predictable at delivery. It also allows you to provide instructions on accepting the dockage and grade and how discrepancies should be handled and is a key factor in determining whether a second opinion is warranted. 

The sample is the base for your grade and the results are only representative of the submitted sample and are not necessarily reflective of the entire lot of grain. 

The CGC, grain buyers, and private companies all offer sample assessments and provide an unofficial grade. 

1. Harvest Sample Program 

The CGC’s Harvest Sample Program offers free unofficial grade and quality information from September to December. You now have until December 30. Your assessment report will include the sample’s: 

  • dockage; 
  • unofficial grade; and 
  • oil, protein and chlorophyll (green) content. 

Visit the Canadian Grain Commission’s Harvest Sample Program web page. 

Sign up by October 29, through the link above to receive a sample kit in the mail. The kit includes special envelopes and instructions on how to submit the samples and receive your tailored assessment. All samples should be submitted by November 30, 2024.

2. Local grain buyers

Shop around and discuss your marketing plans with your local grain elevators and processors. Many facilities will do an assessment of dockage and grade in advance.

3. Fee-for-service assessments

CGC quality assessment service

The CGC’s submitted sample service is available year-round. Cost to submit a canola sample is around $50. Your assessment report will include the sample’s: 

  • dockage; 
  • unofficial grade, including main degrading reason if present; and 
  • distinctly green and heated characteristics.

Private Service Providers

This list does not include all companies providing services.

SGS Canada Inc.
Manitoba: 204-942-8557
Saskatchewan: 306-934-3559
Alberta: 403-290-0903 

Intertek Agri-Testing Laboratories
Western Canada: 204-944-1887

Cotecna Canada
Western Canada: 1-833-332-0091

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