Lentils – Chapter 18
Official Grain Grading Guide

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Grading

Important definitions

Net weight of sample

The sample after cleaning and removal of dockage is referred to as the cleaned sample. Its weight is the net weight of the sample. Percentages by weight for grading refer to percentages of the cleaned sample, or the net weight.

Hazardous substances in samples

Wear gloves and a mask to handle any samples that you suspect may contain hazardous substances. Hazardous substances are defined in the Regulations as “any pesticide, herbicide, dessicant or inoculant.”

Representative portions for grading

All grading is done on representative portions divided down from the cleaned sample, using a Boerner-type divider.

Values in the following table represent a range of recommended portions of samples for grading. Refer to definition of “Representative portion” in the glossary for a complete description of the terms “Minimum”, “Optimum” and “Export”.

Representative portion of lentils for grading, grams

Grading factor	Minimum	Optimum	Export
Ascochyta	25	100	100
Contrasting colours	50	100	250
Damage	25	100	100
Ergot	500	working sample	working sample
Excreta	working sample	working sample	working sample
Fireburnt	500	working sample	working sample
Foreign material	50	100	250
Heated	50	100	100
Insect parts	working sample	working sample	working sample
Odour	working sample	working sample	working sample
Peeled, split and broken	25	100	100
Sclerotinia sclerotiorum	250	500	500
Stained	25	100	100
Stones	250	working sample	working sample

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