SIST EN ISO 520:2011

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Getreide und Hülsenfrüchte - Bestimmung der 1 000­Korn­Masse (ISO 520:2010)Céréales et légumineuses - Détermination de la masse de 1000 grains (ISO 520:2010)Cereals and pulses - Determination of the mass of 1000 grains (ISO 520:2010)67.060QMLKCereals, pulses and derived productsICS:Ta slovenski standard je istoveten z:EN ISO 520:2010SIST EN ISO 520:2011en01-marec-2011SIST EN ISO 520:2011SLOVENSKI
STANDARD



SIST EN ISO 520:2011



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN ISO 520
November 2010 ICS 67.060 English Version
Cereals and pulses - Determination of the mass of 1000 grains (ISO 520:2010)
Céréales et légumineuses - Détermination de la masse de 1000 grains (ISO 520:2010)
Getreide und Hülsenfrüchte - Bestimmung der 1 000-Korn-Masse (ISO 520:2010) This European Standard was approved by CEN on 13 November 2010.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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EN ISO 520:2010 (E) 2 Contents Page Foreword .3 SIST EN ISO 520:2011



EN ISO 520:2010 (E) 3 Foreword This document (EN ISO 520:2010) has been prepared by Technical Committee ISO/TC 34 "Food products" in collaboration with Technical Committee CEN/TC 338 “Cereal and cereal products” the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2011, and conflicting national standards shall be withdrawn at the latest by May 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 520:2010 has been approved by CEN as a EN ISO 520:2010 without any modification.
SIST EN ISO 520:2011



SIST EN ISO 520:2011



Reference numberISO 520:2010(E)© ISO 2010
INTERNATIONAL STANDARD ISO520Second edition2010-11-15Cereals and pulses — Determination of the mass of 1 000 grains Céréales et légumineuses — Détermination de la masse de 1 000 grains
SIST EN ISO 520:2011



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SIST EN ISO 520:2011



ISO 520:2010(E) © ISO 2010 – All rights reserved iii 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, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 520 was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 4, Cereals and pulses. This second edition cancels and replaces the first edition (ISO 520:1977), which has been technically revised.
SIST EN ISO 520:2011



SIST EN ISO 520:2011



INTERNATIONAL STANDARD ISO 520:2010(E) © ISO 2010 – All rights reserved 1 Cereals and pulses — Determination of the mass of 1 000 grains 1 Scope This International Standard specifies a method for the determination of the mass of 1 000 grains of cereals and pulses. This International Standard is applicable to all species of cereals and pulses with the exception of seed lots for sowing purposes. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 712, Cereals and cereal products — Determination of moisture content — Reference method ISO 24557, Pulses — Determination of moisture content — Air-oven method 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 mass of 1 000 grains as received mass of 1 000 grains including the moisture content at the time of the determination 3.2 mass of 1 000 grains on the dry matter basis mass of 1 000 grains as received converted to the dry matter basis by correcting for the moisture content at the time of the determination 4 Principle A test portion is prepared by separating whole grains. The test portion is weighed and the whole grains counted. The mass of the whole grains is divided by their number, and expressed on the basis of 1 000 grains. SIST EN ISO 520:2011



ISO 520:2010(E) 2 © ISO 2010 – All rights reserved 5 Apparatus 5.1 Sample divider apparatus (if necessary). 5.2 Appropriate apparatus for counting grains (e.g. a photoelectric counter). If suitable apparatus is not available, counting may be carried out by hand. 5.3 Balance, capable of being read to the nearest 0,001 g. 6 Procedure 6.1 Determination of the mass of 1 000 grains as received Take by division a mass consisting of approximately 500 grains from the sample as received. Separate the whole grains, weigh them to the nearest 0,01 g and count them. For straw cereals, a mass of 30 g is generally in accordance with this instruction. Carry out tests in duplicate. 6.2 Determination of the mass of 1 000 grains on the dry matter basis If the mass of 1 000 grains is to be referred to the dry basis, determine the moisture content of the whole grains free of impurities in a separate sample, in accordance with t
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