isO INTERNATIONAL STANDARD 5502 Second edition 1992-10-15 Oilseed residues -- Preparation of test samples Tourteaux de graines oleagineuses - Preparation des échantillons pour essai Reference number ISO 5502:1992(E) ISO 5502:1992(E) Foreword IsO (the International Organization for Standardization) is a worldwide federationofnationalstandardsbodies(isOmemberbodies).Thework 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. so collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft international Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard iso 5502 was prepared by Technical Committee IsO/TC 34, Agricultural food products, Sub-Committee Sc 2, Oleaginous seeds and fruits. This second edition cancels and replaces the first edition (Is0 5502:1983), clause 2, subclause 5.4and figure 2 of which have been technically revised. ISO. .1992 or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from thepublisher. International Organization for Standardization CasePostale56·CH-1211Geneve20·Switzerland Printed in Switzerland ii ISO 5502:1992(E) INTERNATIONAL STANDARD Oilseed residues - Preparation of test samples Scope 3Principle 1 Grinding of the laboratory sample, with or without This International Standard specifies methods for preliminary breaking, crushing, grinding or drying. the preparation of test samples of oilseed residues Division of the sample thus obtained by suitable by the reduction of laboratory. samples. means, taking care that the test sample, from which For the purposes of this International Standard, the the test portion(s) will be taken, truly represents the term oilseed residues includes meals, extractions, totality of the laboratory sample. expeller cakes or slab cakes1) resulting from the production of crude vegetable oils from oilseeds by Apparatus 4 pressure or solvent extraction. It does not include compounded products. 4.1 Mechanical mill, easy to clean and allowing the oilseed residue to be ground, without heating and NOTE1 The sampling of oilseed residues for the prep- without appreciable change in its oil and moisture aration laboratory samples described of in and volatile matter contents, until it passes com- Is05500:1986,Oilseedresidues-Sampling. pletely through a sieve of aperture size 1,00 mm [or 2,80 mm (see 5.1.3.1)]. 4.2 Crushing apparatus, if required, for example an iron pestle and mortar, or other means for breaking 2 Normative references or crushing pieces of oilseed residues to a size suitable for introduction into the mechanical mill The following standards contain provisions which, (4.1). throughreferenceinthistext,constituteprovisions ofthisinternationalStandard.Atthetimeofpubli- 4.3 sieves. of aperture sizes 1,00 mm and cation, the editions indicated were valid. All stan- 2,80 mm, made from metal wire cloth, and comply- dards are subject to revision, and parties to ing with the requirements of Iso 565. agreements based on this International Standard are encouraged to investigate the possibility of ap- 4.4 Dividing apparatus, quartering apparatus, coni- plying the most recent editions of the standards in- cal divider (see figure 1), multiple-slot divider (see dicated below. Members of IEc and Iso maintain registers of currently valid International Standards. figure2)or otherdividingapparatus,whichwillen sure uniform distribution of the components of the laboratory sample in the tes