1、January 2013 Translation by DIN-Sprachendienst.English price group 9No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、 71.100.80!$g0“1936813www.din.deDDIN EN 12914Products used for treatment of water intended for human consumption Powdered perlite;English version EN 12914:2012,English translation of DIN EN 12914:2013-01Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch Perlit, pulverfrmig;Englische F
3、assung EN 12914:2012,Englische bersetzung von DIN EN 12914:2013-01Produits utiliss pour le traitement de leau destine la consommation humaine Perlite en poudre;Version anglaise EN 12914:2012,Traduction anglaise de DIN EN 12914:2013-01SupersedesDIN EN 12914:2006-01www.beuth.deIn case of doubt, the Ge
4、rman-language original shall be considered authoritative.Document comprises 14 pages 12.12 DIN EN 12914:2013-01 2 A comma is used as the decimal marker. National foreword This document (EN 12914:2012) has been prepared by Technical Committee CEN/TC 164 “Water supply” (Secretariat: AFNOR, France). Th
5、e responsible German body involved in its preparation was the Normen-ausschuss Wasserwesen (Water Practice Standards Committee), Working Committee NA 119-04-02 AA Wasseraufbereitung. Users of this standard are advised of the reservations stated in the Introduction of the European Standard and should
6、 note that national regulations exist in Germany dealing with water for human consumption, in particular the Trinkwasserverordnung (TrinkwV2001) (German Drinking Water Ordinance). Amendments This standard differs from DIN EN 12914:2006-01 as follows: a) the reference to Directive 67/548/EEC relating
7、 to the classification, packing and labelling of dangerous substances has been replaced by the reference to Regulation EC No 1272/2008. Previous editions DIN EN 12914: 1999-11, 2006-01 National Annex NA (informative) Bibliography Verordnung ber die Qualitt von Wasser fr den menschlichen Gebrauch (Tr
8、inkwasserverordnung TrinkwV 2001) (German Drinking Water Ordinance), as of 28 November 2011 (BGBI. I p. 2370), as amended by Article 2, Paragraph 19 of the Act of 22 December 2011 (BGBI. I p. 3044)Registered in the DITR database of DIN Software GmbH, obtainable from: Beuth Verlag GmbH, 10772 Berlin.
9、EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12914 October 2012 ICS 71.100.80 Supersedes EN 12914:2005English Version Products used for treatment of water intended for human consumption - Powdered perlite Produits utiliss pour le traitement de leau destine la consommation humaine - Perlite e
10、n poudre Produkte zur Aufbereitung von Wasser fr den menschlichen Gebrauch - Perlit, 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 European Standard
11、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, Fr
12、ench, 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, Bulgari
13、a, 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, Switzerland, Turke
14、y 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. No. EN 12
15、914:2012: EEN 12914:2012 (E) 2 Contents Page Foreword 3Introduction . 41 Scope 52 Normative references 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 (infor
16、mative) General information on powdered perlite 10Bibliography 12DIN EN 12914:2013-01 EN 12914:2012 (E) 3 Foreword This document (EN 12914:2012) 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 st
17、atus of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2013, and conflicting national standards shall be withdrawn at the latest by April 2013. Attention is drawn to the possibility that some of the elements of this document may be the subje
18、ct of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12914:2005. The significant technical difference between this edition and EN 12914:2005 is as follows: Updating of 9.2 in line with current legislation. Ac
19、cording to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germa
20、ny, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 12914:2013-01 EN 12914:2012 (E) 4 Introduction In respect of potential adverse eff
21、ects 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,
22、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 European Standard does not confer or imply acceptance or approval of the product in any of the Member St
23、ates of the EU or EFTA. The use of the product covered by this European Standard is subject to regulation or control by National Authorities. DIN EN 12914:2013-01 EN 12914:2012 (E) 5 1 Scope This European Standard is applicable to powdered perlite used for treatment of water intended for human consu
24、mption. It describes the characteristics of powdered perlite and specifies the requirements and the corresponding test methods for powdered perlite and gives information on its use in water treatment. 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 EN ISO 10058 (all parts), Chemical analysis of magnesite and dolomite refractory products (alternative t
27、o the X-ray fluorescence method) (ISO 10058) 3 Terms, definitions and symbols For the purposes of this document, the terms, definitions and symbols given in EN 12901:1999 apply. 4 Description 4.1 Identification 4.1.1 Chemical name Not applicable. 4.1.2 Synonym or common names Perlite, expanded perli
28、te. 4.1.3 Chemical formula Not applicable. 4.1.4 CAS Registry number 1)Not available. 1) Chemical Abstracts Service Registry Number. DIN EN 12914:2013-01 EN 12914:2012 (E) 6 4.1.5 EINECS Reference 2)Not available. 4.2 Commercial form The product is available in white powder forms in grades differing
29、 in permeability. 5 Physical properties 5.1 Appearance White powder. 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 common
30、ly specified as a mass fraction of 95 % less than a given particle 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 wit
31、hin the manufacturers declared values. 5.3 Density The bulk density packed shall be in the range of 200 kg/m3to 700 kg/m3.6 Chemical properties This European Standard specifies the minimum purity requirements for powdered perlite used for the treatment of water intended for human consumption. Limits
32、 are given for impurities commonly 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 regulation
33、s in order to clarify whether 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 chemi
34、cal parameters where these are 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. DIN EN 12914:2013-01 EN 12914:2012 (E) 7 materials lead to significa
35、nt 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 Table 1. Table 1 Composition of commercial product Parameter Limit in mass fraction in% of the product SiO2min 70Al2O3min 10 Na2O + K2O
36、min 5Mass loss at 150 C max 5 After filling, washing and commissioning of a filter system producing drinking water, powdered perlite should not increase the concentrations of chemical parameters (see 1). NOTE Water extractable substances, determined in accordance with the method for powdered materia
37、ls 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 the cake density shall be within 5 % of the manufacturers declared value. 8 Test methods 8.1 Sampling
38、 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 accordance with EN 12902. 8.2.2 Bulk density packed The bulk density packed shall be determined in accordan
39、ce with EN 12902. 8.2.3 Content of silica The content of silica shall be determined in accordance with EN 12902. 8.2.4 Content of aluminium oxide The content of Al2O3shall be determined in accordance with EN ISO 10058. DIN EN 12914:2013-01 EN 12914:2012 (E) 8 8.2.5 Content of sodium and potassium ox
40、ides The contents of Na2O and K2O shall be determined in accordance with EN ISO 10058. 8.2.6 Mass loss at 150 C The mass loss at 150 C shall be determined using the method for water content described in EN 12902 using a temperature of (150 5) C. 8.2.7 Permeability The permeability shall be determine
41、d in accordance with EN 12902. 8.2.8 Cake density The cake density shall be determined in accordance with EN 12902. 9 Labelling, transportation and storage 9.1 Means of delivery Perlite shall be delivered in bags, big bags or in bulk. In order that the purity of the product is not affected, the mean
42、s 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)Powdered perlite is not listed within Annex VI of Regulation (EC) No 1272/2008 at the date of publication of th
43、is European Standard. The legislation 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 regulation should be classified on the basis of their intrinsic properties according t
44、o the criteria in the regulation by the person responsible for the marketing of the substance. NOTE Additional national regulations could apply to the labelling of this product. 9.3 Transportation regulations and labelling Powdered perlite is not listed under a UN Number 4). Powdered perlite is not
45、classified as a dangerous product for road, rail, sea and air transportation. 9.4 Marking The marking shall include the following: name “Powdered perlite“, trade name and grade; 3)See 2. 4) United Nations Number. DIN EN 12914:2013-01 EN 12914:2012 (E) 9 net mass; name and the address of supplier and
46、/or manufacturer; statement “this product conforms to EN 12914“. 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
47、 The product shall be kept away from volatile solvents, odorous products and moisture. DIN EN 12914:2013-01 EN 12914:2012 (E) 10 Annex A (informative) General information on powdered perlite A.1 Origin A.1.1 Raw material Industrial manufactured perlite is produced by mining and grinding (to particle
48、 size less than 1 mm) natural rhyolite. This product contains a mass fraction of 2 % to 5 % of water as water of crystallisation. A.1.2 Manufacturing process Ground rhyolite is spread into the flame of a burner. At the same time, rhyolite loses its water and fuses; the water is instantly volatilised and the expansion of this steam blows the fused rhyolite into cenospher
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