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STANDARDSIST EN 12903:20031DGRPHãþD
SIST EN 12903:2009
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12903March 2009ICS 71.100.80Supersedes EN 12903:2003
English VersionProducts used for the treatment of water intended for humanconsumption - Powdered activated carbonProduits utilisés pour le traitement de l'eau destinée à laconsommation humaine - Charbon actif en poudreProdukte zur Aufbereitung von Wasser für denmenschlichen Gebrauch - Pulver-AktivkohleThis European Standard was approved by CEN on 9 February 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12903:2009: ESIST EN 12903:2009
EN 12903:2009 (E) 2 Contents Foreword . 3Introduction . 41Scope . 52Normative references . 53Terms and definitions . 54Description . 54.1Identification . 54.2Commercial form . 65Physical properties . 65.1Appearance . 65.2Particle size distribution . 65.3Bulk density packed . 66Chemical properties . 66.1General . 66.2Purity criteria . 67Specific properties. 88Test methods . 88.1Sampling . 88.2Analysis . 89Labelling, transportation and storage . 99.1Means of delivery . 99.2Risk and safety labelling according to the EU directives
......................................................................... 99.3Transportation regulations and labelling .................................................................................................. 109.4Marking ......................................................................................................................................................... 109.5Storage .......................................................................................................................................................... 10Annex A (informative)
General information on powdered activated carbon . 11A.1Origin . 11A.2Properties . 11A.3Use . 12A.4Rules for safe handling and use . 13A.5Emergency procedures . 13Bibliography . 14 SIST EN 12903:2009
EN 12903:2009 (E) 3 Foreword This document (EN 12903:2009) has been prepared by Technical Committee CEN/TC 164 “Water supply”, 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 September 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. 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. This document supersedes EN 12903:2003. Differences between this edition and EN 12903:2003 are editorial to harmonize the text with other standards in this series. Annex A is informative. 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, 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.
SIST EN 12903:2009
EN 12903:2009 (E) 4 Introduction In respect of potential adverse effects on the quality of water intended for human consumption, caused by the product covered by this European Standard: a) this European Standard provides no information as to whether the product may be used without restriction in any of the Member States of the EU or EFTA; b) it should be noted that, while awaiting the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of this product remain in force. NOTE Conformity with this standard does not confer or imply acceptance or approval of the product in any of the Member States of the EU or EFTA. The use of the product covered by this European Standard is subject to regulation or control by National Authorities. SIST EN 12903:2009
EN 12903:2009 (E) 5 1 Scope This European Standard is applicable to powdered activated carbon used for treatment of water intended for human consumption. It describes the characteristics of powdered activated carbon and specifies the requirements and the corresponding test methods for powdered activated carbon. It gives information on its use in water treatment. 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. EN 12901:1999, Products used for treatment of water intended for human consumption - Inorganic supporting and filtering materials – Definitions EN 12902, Products used for treatment of water intended for human consumption - Inorganic supporting and filtering materials - Methods of test EN ISO 787-11, General methods of test for pigments and extenders - Part 11: Determination of tamped volume and apparent density after tamping (ISO 787-11:1981) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12901:1999 apply. 4 Description 4.1 Identification 4.1.1 Chemical name(s) Carbon. 4.1.2 Synonym or common names Activated coal, activated charcoal, active carbon. 4.1.3 Chemical formula C (elementary). 4.1.4 CAS Registry Number 1) 7440-44-0. 4.1.5 EINECS reference 2) 231-153-3.
1) Chemical Abstracts Service Registry Number. 2) European Inventory of Existing Commercial Chemical Substances. SIST EN 12903:2009
EN 12903:2009 (E) 6 4.2 Commercial form Powdered activated carbon is available in many grades, differing in adsorption characteristics, porosity, particle size and purity. 5 Physical properties 5.1 Appearance The product is a black powder. 5.2 Particle size distribution 5.2.1 Particle size At least a mass fraction of 95 % shall have a particle size less than 150 µm. NOTE Other values can be necessary for certain applications. The particle size distribution is commonly specified as a mass fraction of 95 % less than a given particle size.
The particle size distribution shall be within the manufacturer’s declared values. 5.2.2 Oversize and undersize particles The proportion of oversize and undersize particles shall be within the manufacturer’s declared values. 5.3 Bulk density packed The bulk density packed shall be within ± 10 % of the value specified by the manufacturer or supplier. NOTE The bulk density packed of powdered activated carbon is typically in the range 200 kg/m3 to 750 kg/m3. 6 Chemical properties 6.1 General Powdered activated carbon is manufactured by controlled oxidation
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