1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 12913:2012Products used for treatmentof water intended for humanconsumption Powdereddiatomaceous earthCopyright European Committee for Standardization Provided by IHS under
2、 license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12913:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 12913:2012. Itsupersedes BS EN 12913:2005 which is withdrawn.The UK participation in its preparat
3、ion was entrusted to TechnicalCommittee CII/59, Chemicals for drinking water treatment.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for it
4、s correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 77574 1ICS 13.060.20; 71.100.80Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Po
5、licy and Strategy Committee on 31 January 2013.Amendments issued since publicationDate Text affectedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12913:2012EUROPEAN STAND
6、ARD NORME EUROPENNE EUROPISCHE NORM EN 12913 November 2012 ICS 71.100.80 Supersedes EN 12913:2005English Version Products used for treatment of water intended for human consumption - Powdered diatomaceous earth Produits utiliss pour le traitement de leau destine la consommation humaine - Terre de di
7、atomes en poudre Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Kieselgur, pulverfrmig This European Standard was approved by CEN on 9 September 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europea
8、n 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 (
9、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, Belgi
10、um, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer
11、land, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref
12、. No. EN 12913:2012: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12913:2012EN 12913:2012 (E) 2 Contents Page Foreword 3Introduction . 41 Scope 52 Normative references
13、53 Terms, definitions and symbols . 54 Description . 55 Physical properties 66 Chemical properties 67 Specific properties. 78 Test methods 79 Labelling, transportation and storage . 8Annex A (informative) General information on powdered diatomaceous earth . 10Annex B (normative) General rules relati
14、ng to safety . 12Bibliography 13Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12913:2012EN 12913:2012 (E) 3 Foreword This document (EN 12913:2012) has been prepared by Te
15、chnical 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 May 2013, and conflicting national standards shall be withdr
16、awn at the latest by May 2013. 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 12913:2005. The significant
17、 technical difference between this edition and EN 12913:2005 is as follows: Updating of 9.2 in line with current legislation. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Bel
18、gium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switz
19、erland, Turkey and the United Kingdom. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12913:2012EN 12913:2012 (E) 4 Introduction In respect of potential adverse effects on
20、 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 a
21、waiting 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 European Standard does not confer or imply acceptance or approval of the product in any of the Member States of
22、 the EU or EFTA. The use of the product covered by this European Standard is subject to regulation or control by National Authorities. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS
23、-,-,-BS EN 12913:2012EN 12913:2012 (E) 5 1 Scope This European Standard is applicable to powdered diatomaceous earth used for treatment of water intended for human consumption. It describes the characteristics of powdered diatomaceous earth and specifies the requirements and the corresponding test m
24、ethods for powdered diatomaceous earth and gives information on its use in water treatment. It also determines the rules relating to safe handling and use of powdered diatomaceous earth (see Annex B). 2 Normative references The following documents, in whole or in part, are normatively referenced in
25、this document and are indispensable for its application. 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
26、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 3 Terms, definitions and symbols For the purposes of this document, the terms, definitions and symbols g
27、iven in EN 12901:1999 apply. 4 Description 4.1 Identification 4.1.1 Chemical name Not applicable. 4.1.2 Synonym or common names Diatomite, Kieselguhr, Diatomaceous earth, Calcined diatomite, Flux calcined diatomite. 4.1.3 Chemical formula Not applicable. 4.1.4 CAS Registry numbers 1) 61 790-53-2 Dry
28、 and ground; 91 053-39-3 Diatomaceous calcined; 68 855-54-9 Flux calcined. 1) Chemical Abstracts Service Registry Number. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12
29、913:2012EN 12913:2012 (E) 6 4.1.5 EINECS reference 2)Calcined 293-303-4. 4.2 Commercial form The product is available in powder forms in many grades differing in permeability. 5 Physical properties 5.1 Appearance The product is a white (flux calcined), pink (calcined), or white to green (natural), p
30、owder. 5.2 Particle size distribution 5.2.1 Particle size A mass fraction of at least 95 % shall have a particle size less than 1 000 m. 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 part
31、icle size. The particle size distribution shall be within the manufacturers declared values. 5.2.2 Uniformity coefficient Not relevant. 5.2.3 Oversize and undersize particles The proportion of oversize and undersize particles shall be within the manufacturers declared values. 5.3 Density bulk densit
32、y packed The bulk density packed shall be in the range of 150 kg/m3to 550 kg/m3. 6 Chemical properties This European Standard specifies the minimum purity requirements for powdered diatomaceous earth used for the treatment of water intended for human consumption. Limits are given for impurities comm
33、only present in the product. Depending on the raw material and the manufacturing process other impurities may be present and, if so, this shall be notified to the user and when necessary to relevant authorities. Users of this product should check the national regulations in order to clarify whether
34、it is of appropriate purity for treatment of water intended for human consumption, taking into account raw water quality, contents of other impurities and additives used in the products not stated in this product standard. Limits have been given for impurities and chemical parameters where these are
35、 likely to be present in significant quantities from the current production process and raw materials. If the production process or raw 2) European Inventory of existing Commercial Chemical Substances. Copyright European Committee for Standardization Provided by IHS under license with CENNot for Res
36、aleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12913:2012EN 12913:2012 (E) 7 materials lead to significant quantities of impurities, by-products or additives being present, this shall be notified to the user. The composition of the commercial product shall conform to T
37、able 1. Table 1 Composition of commercial product Parameter Limit in mass fraction % SiO2min 85Mass loss at 150 C max 5 After filling, washing and commissioning of a filter system producing drinking water, powdered diatomaceous earth should not increase the concentrations of chemical parameters (see
38、 1). NOTE Water extractable substances, determined in accordance with the method for powdered materials given in EN 12902, can be used to estimate the leaching of the chemicals specified in EN 12902. 7 Specific properties The permeability shall be within 15 % of the manufacturers declared value and
39、the cake density shall be within 5 % of the manufacturers declared value. 8 Test methods 8.1 Sampling Prepare the laboratory sample(s) required by the relevant procedures described in EN 12902. 8.2 Analysis 8.2.1 Particle size distribution The particle size distribution shall be determined in accord
40、ance with EN 12902. 8.2.2 Bulk density packed The bulk density packed shall be determined in accordance with EN 12902. 8.2.3 Content of silica The content of silica shall be determined in accordance with EN 12902. 8.2.4 Mass loss at 150 C The mass loss at 150 C shall be determined using the method f
41、or water content described in EN 12902 using a temperature of (150 5) C. 8.2.5 Permeability The permeability shall be determined in accordance with EN 12902. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted w
42、ithout license from IHS-,-,-BS EN 12913:2012EN 12913:2012 (E) 8 8.2.6 Cake density The cake density shall be determined in accordance with EN 12902. 9 Labelling, transportation and storage 9.1 Means of delivery Diatomaceous earth shall be delivered in bags, big bags, or in bulk. In order that the pu
43、rity of the product is not affected, the means of delivery shall not have been used previously for any different product or it shall have been specially cleaned and prepared before use. 9.2 Labelling according to the EU legislation 3)The following labelling requirements shall apply to powdered diato
44、maceous earth at the date of publication of this European Standard. Hazard pictogram Figure 1 GHS07 Signal word: Warning Hazard statements: H332: Harmful if inhaled NOTE Precautionary statements (P statements) should be provided by the company being responsible for the marketing of the substance. Th
45、ey should be indicated on the packaging label and in the extended safety data sheet (eSDS) of the substance. The regulation 2, and its amendments for the purposes of its adaptation to technical and scientific progress contains a list of substances classified by the EU. Substances not listed in this
46、regulation should be classified on the basis of their intrinsic properties according to the criteria in the regulation by the person responsible for the marketing of the substance. 9.3 Transportation regulations and labelling Powdered diatomaceous earth is not classified as a dangerous product for r
47、oad, rail, sea or air transportation. 3) See 2. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12913:2012EN 12913:2012 (E) 9 Powdered diatomaceous earth is not listed unde
48、r a UN Number 4). 9.4 Marking The marking shall include the following: name “Powdered diatomaceous earth“, trade name and grade; net mass; name and the address of supplier and/or manufacturer; statement “this product conforms to EN 12913“. 9.5 Storage 9.5.1 Long-term stability The product is stable but hygroscopic. The product can be stored for one or two years if kept dry and away from volatile materials which are adsorbed on the product. 9.5.2 Storage incompatibilities The product sh
