BS ISO BRITISH STANDARD 13292:2006 Copper, lead, zinc and nickel concentrates - Experimental methods for checking the bias of sampling ICS 73.060.99 BSi NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards BSISO13292:2006 National foreword This British Standard is the UK implementation of ISO 13292:2006. The UK participation in its preparation was entrusted to Technical Committee NFE/36, Copper, lead and zinc ores and concentrates. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was Amendments/corrigendaissued sincepublication published under the authority of the Standards Policy and Date Comments Strategy Committee on 30 April 2008 @ BSI 2008 ISBN9780580555152 BS IS0 13292:2006 ISO INTERNATIONAL STANDARD 13292 Second edition 2006-03-15 Copper, lead, zinc and nickel concentrates Experimental methods for checking the bias of sampling Concentrésde cuivre, deplomb,dezinc etdenickelMethodes experimentalesde controle deI'erreur systematique d'echantillonnage Reference number ISO13292:2006(E) i BSISO13292:2006 Sommaire Page Foreword. 1 Scope 2 Normativereferences. 3 General requirementsandrecommendations 4 Samplingandsampleprocessingmethods... 4.1 Sampling.... 4.1.1 General. 4.1.2 Checking bias in mechanical sampling .... 4.1.3 Checkingdifferencebetweensamplingatdifferent locations 4.2 Sampleprocessingand analysis .... 5 Analysis ofexperimental data.. 5.1 Statistical basis............ 5.2 Determination of the mean difference and its standard deviation.... 5.3 Determination of the required numberof data sets.... 5.4 Statistical test.. Annex A (informative) Numerical examples of determining the bias of sampling .. Bibliography ii BS IS013292:2006 Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies technical committees. Each member body interested in a subject for which a technical committee has been InternationalElectrotechnicalCommission(lEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC 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 least75%ofthe memberbodiescastinga 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 13292 was prepared by Technical Committee ISO/TC 183, Copper, lead, zinc and nickel ores and concentrates. This second edition cancels and replaces the first edition (IsO 13292:1997), which has been technically revised. iv BSIS013292:2006 Copper,lead,zinc andnickelconcentratesExperimental methods for checking the bias of sampling WARNINGThis International Standard may involve hazardous materials, operations and equipment. It is the responsibility of the user of this International Standard to establish appropriate health and 1 Scope This International Standard specifies methods for checking whether there is any bias in the sampling of copper, lead, zinc and nickel concentrates, where the sampling is carried out in accordance with the methods Numerical examples are given in Annex A. 2 Normativereferences 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. Iso12743,Copper,