(ISo 6667 International Standard INTERNATIONAL ORGANIZATION FOR STANDARDIZATION MEXAYHAPOAHAA OPIAHW3ALWA NO CTAHIAPTW3AUWWORGANISATION INTERNATIONALE DE NORMALISATION Green coffee - Determination of proportion of insect-damaged beans Cafe vert -- Deétermination de la proportion de feves endommagées par les insectes First edition - 1985-11-01 UDC 633.73 : 620.193.87 Ref. No. 1SO 6667-1985 (E) 0 6667-1985 (E) Descriptors:agricultural products, coffee,tests, determination, damage,insects. Price based on 12 pages itted without license from IHS Not for Resale Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with iso, also take part in the work. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the Iso Council. They are approved in accordance with ISO procedures requiring at least 75 % approval by the member bodies voting. Agricultural food products Users should note that all International Standards undergo revision from time to time and that any reference made herein to any other international Standard implies its latest edition, unless otherwise stated International Organization for Standardization, 1985 Printed in Switzerland Not for Resale ted without license from IHS INTERNATIONAL STANDARD ISO 6667-1985 (E) Green coffee - Determination of proportion of insect-damaged beans 0 Introduction From the proportion of insect-damaged beans thus determined The method described in this international Standard is based estimation of the confidence limits of the true propor- on experience gained in the inspection of green coffee beans tion of insect-damaged beans for a given probability to the beans and of the insect species responsible for this estimation of the probability that the true proportion of insect-damaged beans will not exceed a given value. damage. Visual examination of the external surface of green coffee Apparatus beans is the only practical way to identify and separate beans which have been attacked by insects; thus, the method described applies only to external damage caused by insects. 5.1 Magnifying glass (recommended) A magnification of X 5 is suitable for inspection of the surface 1 Scope and field of application of beans. This International Standard describes the types of damage 5.2 Sample-holder (optional) caused by insects to green coffee beans and specifies a method for the determination of the proportion of insect-damaged The use of a sample holder having a given number of cavities, beans in a lot of green coffee, together with the statistical use each capable of holding a whole coffee bean, facilitates of the result obtained for technical, commercial and arbitration counting and separation of beans. purposes. The method is applicable to green coffee as defined in Sampling ISO 3509. See ISO 4072. 2 References Iso 3509, Coffee and its products -- Vocabulary. 7 Damage caused by insects ISO 4072, Green coffee in bags -- Sampling. NOTE - Photographs are useful as a means of illustrating damage caused by insects and other types of damage visible on the external surface of the bean. Some photographic illustrations are given in Definition 3 annex A. For the purpose of this International Standard, the following 7.1 Description definition applies. A green coffee bean may show a great variety of damage insect-damaged bean: A coffee bean damaged externally by caused by insects, from minor scars on the surface to a con- insects. siderable number of holes and tunnels. It is usually impossible to