90.60 Close of review Mar 4, 2024
ISO
ISO/TC 34/SC 15 Coffee
International Standard
67.140.20 Coffee and coffee substitutes
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 responible to 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 homogenity of the laboratory sample.
PUBLISHED
ISO 6667:1985
90.60
Close of review
Mar 4, 2024