ISO 6667:1985

Current Revision
Green coffee -- Determination of proportion of insect-damaged beans

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ISO 6667:1985

Green coffee -- Determination of proportion of insect-damaged beans

PUBLISH DATE 1985
ISO 6667:1985

The method consists in visual examination of the external surface of beans to identify those which have been damaged by insects.

Determination of the observed proportion, as a percentage, of damaged beans and, if possible, identification of the species of insect responsible for damage.

From the proportion of damaged beans thus determined:

  • estimation of the confidence limits of the true proportion of damaged beans for a given probability;
  • estimation of the probability that the true proportion of damaged beans will not exceed a given value.

An annex A shows illustrations of damaged beans.

An annex B describes a test for homogeneity of the laboratory sample.

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