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Safflower seed – Chapter 15
Official Grain Grading Guide

Determination of dockage

Definitions

Dockage is assessed and recorded to the nearest 0.1%.

Dockage is defined under the Canada Grain Act as “any material intermixed with a parcel of grain, other than kernels of grain of a standard of quality fixed by or under this Act for a grade of that grain, that must and can be separated from the parcel of grain before that grade can be assigned to the grain.” Dockage is removed by following the cleaning procedures described in this section of the guide.

The sample as it arrives is referred to as the uncleaned or dirty sample. Its weight is the gross weight of the sample. Dockage is assessed on the gross weight of the sample.

Dockage not reported

▲ Important: Dockage is not reported for

Safflower Seed, Sample Canada Account Fireburnt
Safflower Seed Sample Salvage
Safflower Seed, Sample Condemned

Normal cleaning procedures

▲ Important: Wear gloves and a mask to handle any samples that you suspect may contain hazardous substances.

1. Set up the Carter dockage tester as follows:

Feed control	#7
Air control	#7
Riddle	none
Top sieve	blank
Centre sieve	none
Bottom sieve	none
Sieve cleaner control

2. Using a Boerner-type divider, divide the uncleaned sample to obtain a representative portion.

Official samples should be at least 900 grams.
Unofficial samples must be at least 750 grams.

3. Sieve portions of approximately 250 grams at a time.

4. Sift the sample over a No. 15 round-hole sieve nested over a No. 6 slotted sieve or a No. 6 buckwheat sieve or both, with a blank sieve on the bottom.

5. Turn on the Carter dockage tester.

6. Pour into the hopper the part of the sample that has passed through the No. 15 round-hole sieve.

7. From the material remaining on the top of the No. 1 round-hole sieve, handpick all whole or broken safflower seeds and return them to the cleaned sample.

8. Determine dockage, using the list that follows, under Composition of dockage.

Composition of dockage

Material removed by the No. 15 round-hole sieve, except sound whole safflower seeds
Material removed by the No. 6 slotted, the No. 6 buckwheat sieve, or both
Material removed by aspiration; except sound whole safflower seeds
Soft earth pellets handpicked from the clean sample constituting up to 2.5% of the sample by weight—if the percentage of soft earth pellets is 2.5% or more, soft earth pellets becomes a grading factor.

Commercially clean

Primary samples defined as commercially clean may contain up to 2.5% by weight of dockage.

Optional analysis

Where a shipper requests special cleaning of a carlot of grain at a terminal or transfer elevator, and the elevator manager agrees, dockage material will be analyzed for the presence of grain. The percentage and grade of any grain contained in the dockage will be reported and elevator stocks will be adjusted on the basis of the analysis. Agreement of the shipper and unload elevator must be conveyed to the CGC in writing prior to the analysis being performed.

Procedures

Analyze the official sample.
Record the following on inspection records:
- The percentage by gross weight to the nearest 0.1% and the grade of safflower seed.
- The percentage by gross weight to the nearest 0.1% and the grade of grain separable from dockage.
- The percentage of dockage.

Example
95.0% Safflower Seed, No. 1 CAN
4.0% Domestic Mustard Seed, No. 1 CAN Oriental
1.0% dockage