EN 12905:2012
(Main)Products used for treatment of water intended for human consumption - Expanded aluminosilicate
Products used for treatment of water intended for human consumption - Expanded aluminosilicate
This European Standard is applicable to expanded aluminosilicate used for treatment of water intended for human consumption. It describes the characteristics of and specifies the requirements and the corresponding test methods for expanded aluminosilicate. It gives information on its use in water treatment.
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Expandierte Aluminiumsilikate
Diese Europäische Norm gilt für expandierte Aluminiumsilikate zur Aufbereitung von Wasser für den menschlichen Gebrauch. Sie beschreibt die Eigenschaften von expandierten Aluminiumsilikaten und legt die Anforderungen sowie die entsprechenden Prüfverfahren für expandierte Aluminiumsilikate fest. Sie enthält Angaben zu dessen Anwendung in der Wasseraufbereitung.
Produits utilisés pour le traitement de l’eau destinée à la consommation humaine - Aluminosilicate expansé
La présente Norme européenne s’applique à l’aluminosilicate expansé utilisé pour le traitement de l’eau destinée à la consommation humaine. Elle décrit les caractéristiques de l’aluminosilicate expansé et spécifie les exigences et les méthodes d’essai correspondantes. Elle donne des informations sur son emploi dans le traitement de l’eau.
Proizvodi, ki se uporabljajo za pripravo pitne vode - Ekspandirani aluminijev silikat
Ta dokument obravnava ekspandirani aluminijev silikat, ki se uporablja za pripravo pitne vode. Opisuje značilnosti ekspandiranega aluminijevega silikata ter določa zahteve in ustrezne preskusne metode zanj. Standard podaja informacije o uporabi ekspandiranega aluminijevega silikata pri pripravi vode.
General Information
- Status
- Published
- Publication Date
- 30-Oct-2012
- Withdrawal Date
- 29-Apr-2013
- Technical Committee
- CEN/TC 164 - Water supply
- Drafting Committee
- CEN/TC 164/WG 9 - Drinking water treatment
- Current Stage
- 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
- Start Date
- 02-Dec-2024
- Completion Date
- 02-Dec-2024
Relations
- Effective Date
- 08-Jun-2022
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 12905:2012 (CEN) is the European standard for expanded aluminosilicate used in the treatment of water intended for human consumption. It defines the product identity (chemical name and common names such as expanded clay or expanded slate), describes physical and chemical characteristics, specifies performance and purity requirements, and references the corresponding test methods and labelling, transportation and storage rules. The standard is intended to guide manufacturers, suppliers, test laboratories and water utilities on safe, consistent use of expanded aluminosilicate as a filtration and support medium in drinking water treatment.
Key topics and technical requirements
- Identification and forms: Chemical formula (AlxSiyOz) and commercial particle size ranges; available as granular material.
- Physical properties:
- Appearance: grey‑ to red‑brown granular, spherical or angular particles.
- Particle size distribution: measured per EN 12902; can be expressed by effective size (d10), uniformity coefficient (U < 1.5) and minimum size (d1) or by particle size range with allowable oversize/undersize fractions.
- Bulk density (loose/packed): loose 300–900 kg/m3; packed 320–950 kg/m3.
- Particle density, porosity and interstitial volume guidance provided in informative annex.
- Chemical properties:
- Limits for common impurities and a maximum acid‑soluble material content of 7% (mass fraction).
- Guidance that water extractables (per EN 12902) indicate potential leaching; users must check national regulations and raw water compatibility.
- Test methods: Sampling and analyses follow EN 12902 methods for particle size, bulk density and acid‑soluble material.
- Labelling, transport and storage:
- Delivery forms: bags, semi‑bulk or bulk; containers must be clean.
- Marking must include product name/trade name, particle size, net mass/volume, supplier address and statement of conformity to EN 12905.
- Not classified as dangerous goods; storage life effectively unlimited.
Applications and users
- Primary uses: filter media and support layer for biofiltration in open or closed, single or multi‑media filtration systems for drinking water.
- Typical users:
- Water utilities and treatment plant operators specifying filter media.
- Manufacturers and suppliers of expanded aluminosilicate products.
- Test laboratories performing conformity testing to EN 12902 methods.
- Regulatory bodies and consultants assessing raw water compatibility and compliance with drinking water regulations.
- Practical value: ensures consistent media performance (hydraulic behaviour, head loss, wash expansion), informs selection by particle size/density, and reduces uncertainty on chemical purity and leaching potential.
Related standards and legislation
- Normative references: EN 12901:1999 (definitions for inorganic supporting/filtering materials) and EN 12902 (test methods).
- Relevant legislation cited: Council Directive 98/83/EC (drinking water quality) and Regulation (EC) No 1272/2008 (classification, labelling and packaging).
Keywords: EN 12905:2012, expanded aluminosilicate, filter media, water treatment, drinking water, particle size distribution, bulk density, EN 12902.
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Frequently Asked Questions
EN 12905:2012 is a standard published by the European Committee for Standardization (CEN). Its full title is "Products used for treatment of water intended for human consumption - Expanded aluminosilicate". This standard covers: This European Standard is applicable to expanded aluminosilicate used for treatment of water intended for human consumption. It describes the characteristics of and specifies the requirements and the corresponding test methods for expanded aluminosilicate. It gives information on its use in water treatment.
This European Standard is applicable to expanded aluminosilicate used for treatment of water intended for human consumption. It describes the characteristics of and specifies the requirements and the corresponding test methods for expanded aluminosilicate. It gives information on its use in water treatment.
EN 12905:2012 is classified under the following ICS (International Classification for Standards) categories: 71.100.80 - Chemicals for purification of water. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 12905:2012 has the following relationships with other standards: It is inter standard links to EN 12905:2005, EN 12901:1999, EN 12902:2004, EN ISO 15747:2019, EN ISO 21649:2009, EN ISO 3826-4:2015, EN ISO 21649:2023, EN ISO 18562-4:2020, EN ISO 11979-6:2014, EN ISO 25539-3:2024, EN ISO 15883-5:2021, EN ISO 14607:2018, EN ISO 11334-4:2024, EN ISO 7198:2017, EN ISO 25539-2:2020. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 12905:2012 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Proizvodi, ki se uporabljajo za pripravo pitne vode - Ekspandirani aluminijev silikatProdukte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Expandierte AluminiumsilikateProduits utilisés pour le traitement de l’eau destinée à la consommation humaine - Aluminosilicate expanséProducts used for treatment of water intended for human consumption - Expanded aluminosilicate71.100.80Chemicals for purification of water13.060.20Pitna vodaDrinking waterICS:Ta slovenski standard je istoveten z:EN 12905:2012SIST EN 12905:2013en,fr,de01-april-2013SIST EN 12905:2013SLOVENSKI
STANDARDSIST EN 12905:20061DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12905
October 2012 ICS 71.100.80 Supersedes EN 12905:2005English Version
Products used for treatment of water intended for human consumption - Expanded aluminosilicate
Produits utilisés pour le traitement de l'eau destinée à la consommation humaine - Aluminosilicate expansé
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Expandierte Aluminiumsilikate 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 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, 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, Belgium, 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, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR 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 12905:2012: ESIST EN 12905:2013
General information on expanded aluminosilicate . 9Bibliography . 12 SIST EN 12905:2013
uniformity coefficient: (U) which shall be less than 1,5;
minimum size: (d1) with a maximum deviation of ± 5 %. or b) by particle size range and by mass fraction of oversize and und
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