Official Grain Grading Guide

Buckwheat: Determining the size of buckwheat

  1. Using a Boerner-type divider, divide a representative portion of approximately 250 g from the cleaned sample.
  2. Set up the Carter dockage tester as follows.
    Set up the Carter dockage tester
    Feed control# 6
    Air controlOff
    RiddleNone
    Top sievenumberNo. 8 slotted
    Centre sieveBlank tray
    Bottom sieveNone
    Sieve cleaner controlOff
  3. Turn on the Carter dockage tester.
  4. Pour the portion into the hopper.
  5. Turn off the Carter dockage tester.
  6. Determine the percentage by weight of the kernels passing through the numberNo. 8 slotted sieve.
    If the percentage of kernels passing through the numberNo. 8 slotted sieve is:Then the buckwheat is:
    20.0 or lessLarge
    More than 20.0Small

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2026-08-01