ISO 18390 2025.docx

ISOInternationalStandardISO18390Firstedition2025-05Cereals,pulsesandcerealproductsSamplingSimplifiedroutinemethodCereales,IegumineusesetproduitsCerealiersEchantillonnageMethodederoutineSimplifieeReferencenumberISO18390:2025(en)COPYRIGHTPROTECTEDDOCUMENT©ISO2025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsimplementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.ISOcopyrightofficeCP401Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPublishedinSwitzerlandContentsPageForewordivIntroductionv1 Scope12 Normativereferences13 Termsanddefinitions14 Generalrequirements25 Samplingequipmentanddevices36 Sampling36.1 General36.2 Samplingofbulkproducts36.2.1 General36.2.2 Samplingofflowingbulkproducts46.2.3 Samplingofstaticbulkproducts46.2.4 Numberandmassofgrainsamples46.2.5 Numberandmassofsamplesofmilledproductsandothercerealproducts66.3 Samplingofmilledproductsandothercerealproductsinpre-packagedunits76.3.1 Cratesandboxesorsacksandbagsforsampling76.3.2 Incrementalsamplesorpre-packagedunits76.3.3 Numberandmassofsamples87 Laboratorysample107.1 Reductionofheterogeneity107.2 Divisionoftheaggregatesample107.2.1 General107.2.2 Sampledividers107.2.3 Coneandquartermethod118 Packagingandlabellingofsamples128.1 General128.2 Labelsforsamples128.3 Information129 Shipmentofsamples1210 Samplingreport1211 Healthandsafety13Bibliography14ForewordISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.TheproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedintheISO/IECDirectives,Part1.Inparticular,thedifferentapprovalcriterianeededforthedifferenttypesofISOdocumentshouldbenoted.ThisdocumentwasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectives,Part2(seeWWW.iso.org/directives).ISOdrawsattentiontothepossibilitythattheimplementationofthisdocumentmayinvolvetheuseof（八）patent(三).ISOtakesnopositionconcerningtheevidence,validityorapplicabilityofanyclaimedpatentrightsinrespectthereof.Asofthedateofpublicationofthisdocument,ISOhadnotreceivednoticeof（八）patent(三)whichmayberequiredtoimplementthisdocument.HoweverlImplementersarecautionedthatthismaynotrepresentthelatestinformation,whichmaybeobtainedfromthepatentdatabaseavailableatWWW.iso.org/patents.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationofthevoluntarynatureofstandards,themeaningofISOspecifictermsandexpressionsrelatedtoconformityassessment,aswellasinformationaboutISO,sadherencetotheWorldTradeOrganization(WTO)principlesintheTechnicalBarrierstoTrade(TBT工seeWWW.iso.org/iso/foreword.htmLThisdocumentwaspreparedbyTechnicalCommitteeISO/TC34,Foodproducts,SubcommitteeSC4,Cerealsandpulses.Anyfeedbackorquestionsonthisdocumentshouldbedirectedtotheuser'snationalstandardsbody.AcompletelistingofthesebodiescanbefoundatWWW.iso.org/members.htmLIntroductionSamplingisaprocedurethatrequiresbothamethodandequipmentthataresuitableforthetask.Anyanalysisofthecharacteristicsofalotandanyinterpretationoftheresultswouldprovefutileifthesamplewerenotrepresentativeofthelotfromwhichitwastaken.Samplingisadelicateprocedurethatrequiresagreatdealofcare.Itisstronglyrecommendedthatthetaskisentrustedtopersonnelwhohavebeenpreviouslytrainedtousetheappropriateequipment.Astheseproceduresarecomplexforfirstelevators,thesimplifiedroutinemethodgiveninthisdocumenthasbeendevelopedinordertoallowaneasierdailyapplicationinthegrainsector.TheFepresentativityofthesamplestakenaccordingtothemethoddescribedinthisdocumentwasexperimentallycomparedtothatofthosetakenusingthereferencemethodgiveninISO24333andEuropeanregulationNo4012006t3.Fortheresultsofthesestudies,seeISO/TR29263:2021,Clause6,inwhichthemethodofthisdocumentiscalled“routine"andtheprotocolofthereferencemethodiscalled“normative".ISO/TR292633showsthat,insomecases,thesamplingerrorcanbegreaterwhenusingthemethoddescribedinthisdocumentcomparedwiththereferencemethod.Itistheresponsibilityoftheoperatortodecidewhetherthegrea