ISO INTERNATIONAL STANDARD 8460 First edition 1987-05-15 INTERNATIONALORGANIZATIONFORSTANDARDIZATION ORGANISATIONINTERNATIONALEDENORMALISATION MEXKAYHAPOAHAA OPrAHM3ALMR NO CTAHAAPTM3ALMM Instant coffee - Determination of free-flow and compacted bulk densities Cafe soluble -- Determination de la masse volumique sans tassement et apres tassement Referencenumber ISO 8460: 1987 (E) or Standardizatior No reproduction or networking permitted without license from IHS Not for Resale Foreword Iso (the International Organization for Standardization) is a worldwide federation of national standardsbodies(iso memberbodies).Thework of preparing International Standards is normally carried out through Iso technical committees. Each member bodyinterested ina subjectforwhichatechnical committeehasbeen establishedhas the right to be represented on that committee. International organizations, govern- 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 least75%approvalbythememberbodiesvoting. International Standard ISO 8460 was prepared by Technical Committee ISO/TC 34, 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. InternationalOrganizationforStandardization,1987 Printed in Switzerland No reproduction or networking permitted without license from IHS Not for Resale INTERNATIONALSTANDARD ISO8460 : 1987 (E) Instant coffee Determination of free-flow and compacted bulk densities o Introduction ized, cheap, and easily available throughout those parts of the worid where instant coffee is produced, blended, reprocessed A knowledge of the bulk density of instant coffee is essential to and packed. trade in that commodity for it determines the volume occupied by a given mass and hence is an important factor in filling con- tainers correctlyandfor controllingthemassof instant coffee. Scope and field of application Bulk density is defined as the ratio of mass to volume. The This International Standard specifies two methods for the volumeofagivensampleofinstantcoffeevaries,accordingto determination of the bulk density of instant coffee : its history of handling, due to compaction (reversible) and powder breakdown (irreversible) effects. Bulk densities can be a) free-flow bulk density (section one) ; expressed in two ways : free-flow density and compacted density. b) compacted bulk density (section two). Instant coffee is friable and subject to irreversible powder breakdown effects which may occur with repeated determina- References tionsof thecompacted density.Because bothbulkdensities (andin particularthe compacted density)depend socritically ISO787-11， General methods of test for pigments and onthemethods used for handling,it isparticularly important extenders -- Part 11: Determination of tamped volume and thatthemethodsadoptedfortheirmeasurementbeassimple apparent density after tamping. and as independent of the human factors as possible. It is also important that any mechanical apparatus needed is standard- Iso 6670, Soluble coffee in cases with liners - Sampling. Copyright Intenational Organization for Standadization No reproduction or networking permitted without license from IHS Not for Resale