prEN 12485
(Main)Chemicals used for treatment of water intended for human consumption - Calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, calcium magnesium carbonate and dolomitic lime - Test methods
Chemicals used for treatment of water intended for human consumption - Calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, calcium magnesium carbonate and dolomitic lime - Test methods
This document specifies the methods used for the chemical analyses and the determination of physical properties of calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, calcium magnesium carbonate and dolomitic lime used to treat water for human consumption.
This document specifies the reference methods and, in certain cases, an alternative method which can be considered to be equivalent.
Any other methods may be used provided they are calibrated, either against the reference methods or against internationally accepted reference materials, in order to demonstrate their equivalence.
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Calciumcarbonat, Weißkalk, halbgebrannter Dolomit, Magnesiumoxid, Calciummagnesiumcarbonat und Dolomitkalk - Prüfverfahren
Dieses Dokument legt die Verfahren für die chemischen Analysen und zur Bestimmung von physikalischen Eigenschaften von Calciumcarbonat, Weißkalk, halbgebranntem Dolomit, Magnesiumoxid, Calciummagnesiumcarbonat und Dolomitkalk zur Aufbereitung von Wasser für den menschlichen Gebrauch fest.
Dieses Dokument legt die Referenzverfahren und in einigen Fällen ein Alternativverfahren, das als gleichwertig angesehen werden kann, fest.
Andere Verfahren dürfen unter der Voraussetzung angewendet werden, dass diese gegen die Referenzverfahren oder gegen international anerkannte Referenzmaterialien kalibriert sind, um ihre Gleichwertigkeit nachzuweisen.
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation humaine - Carbonate de calcium, chaux, dolomie semi-calcinée, oxyde de magnésium, carbonate de calcium et de magnésium et chaux dolomitique - Méthodes d'essai
Le présent document spécifie les méthodes utilisées pour réaliser les analyses chimiques et déterminer les propriétés physiques du carbonate de calcium, de la chaux, et de la dolomie semi-calcinée, de l’oxyde de magnésium, du carbonate de calcium et de magnésium et de la chaux dolomitique utilisés pour le traitement de l’eau destinée à la consommation humaine.
Le présent document spécifie les méthodes de référence et, dans certains cas, une méthode alternative qui peut être considérée comme étant équivalente.
D’autres méthodes peuvent être utilisées, dans la mesure où elles sont étalonnées, soit par rapport aux méthodes de référence, soit par rapport aux matériaux de référence internationalement reconnus, de manière à démontrer leur équivalence.
Kemikalije, ki se uporabljajo za pripravo pitne vode - Kalcijev karbonat, visoko kalcijevo apno in polžgan dolomit, magnezijev oksid in kalcij-magnezijev karbonat in dolomitno apno - Preskusne metode
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2024
Kemikalije, ki se uporabljajo za pripravo pitne vode - Kalcijev karbonat, visoko
kalcijevo apno in polžgan dolomit, magnezijev oksid in kalcij-magnezijev karbonat
in dolomitno apno - Preskusne metode
Chemicals used for treatment of water intended for human consumption - Calcium
carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, calcium magnesium
carbonate and dolomitic lime - Test methods
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch -
Calciumcarbonat, Weißkalk, halbgebrannter Dolomit, Magnesiumoxid,
Calciummagnesiumcarbonat und Dolomitkalk - Prüfverfahren
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation
humaine - Carbonate de calcium, chaux, dolomie semi-calcinée, oxyde de magnésium,
carbonate de calcium et de magnésium et chaux dolomitique - Méthodes d'essai
Ta slovenski standard je istoveten z: prEN 12485
ICS:
13.060.20 Pitna voda Drinking water
71.100.80 Kemikalije za čiščenje vode Chemicals for purification of
water
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2024
ICS 71.100.80 Will supersede EN 12485:2017
English Version
Chemicals used for treatment of water intended for human
consumption - Calcium carbonate, high-calcium lime, half-
burnt dolomite, magnesium oxide, calcium magnesium
carbonate and dolomitic lime - Test methods
Produits chimiques utilisés pour le traitement de l'eau Produkte zur Aufbereitung von Wasser für den
destinée à la consommation humaine - Carbonate de menschlichen Gebrauch - Calciumcarbonat, Weißkalk,
calcium, chaux, dolomie semi-calcinée, oxyde de halbgebrannter Dolomit, Magnesiumoxid,
magnésium, carbonate de calcium et de magnésium et Calciummagnesiumcarbonat und Dolomitkalk -
chaux dolomitique - Méthodes d'essai Prüfverfahren
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 164.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12485:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General requirements . 6
4.1 Number of determinations . 6
4.2 Methods for analysis . 6
4.3 Sample preparation . 7
4.4 Reagents . 8
4.5 Glassware . 8
4.6 Expression of results . 9
4.7 Repeatability and reproducibility limits . 9
4.8 Test report . 10
5 Determination of screen oversize of high-calcium lime . 10
5.1 Air-jet sieving method . 10
5.2 Wet sieving method. 12
6 Preparation of test solutions . 13
6.1 Fusion with lithium tetraborate . 13
6.2 Extraction with hydrochloric acid . 14
6.3 Microwave digestion with nitric acid . 15
6.4 Pressurized digestion with nitric acid . 16
7 Conventional methods of determining major and minor constituents . 16
7.1 Determination of free water . 16
7.2 Loss on ignition at 500 °C . 18
7.3 Determination of carbon dioxide . 18
7.4 Determination of residue insoluble in hydrochloric acid . 19
7.5 Determination of content of water soluble calcium oxide or calcium hydroxide
(reference method) . 20
7.6 Determination of sugar soluble calcium oxide or calcium hydroxide (alternative
method) . 22
7.7 Water-insoluble matter . 24
7.8 Determination of free CaO . 25
7.9 Determination of calcium oxide and magnesium oxide . 26
7.10 Determination of sulfate . 29
7.11 Determination of solubility index by conductivity . 30
7.12 Calculation of the composition of a commercial product . 33
8 Determination of constituents by modern techniques . 35
8.1 Determination of minor constituents by AAS flame technique . 35
8.2 Determination of major and minor constituents by ICP-OES . 39
9 Determination of chemical parameters. 45
9.1 Determination of lead, cadmium, chromium and nickel by AAS graphite tube
technique . 45
9.2 Determination of lead, cadmium, chromium and nickel by ICP-OES . 50
9.3 Determination of arsenic, antimony and selenium by AAS hydride technique . 54
9.4 Determination of mercury by cold-vapour technique . 57
Annex A (informative) Analytical scheme . 61
Annex B (informative) Precision data for the test methods . 68
Bibliography . 70
European foreword
This document (prEN 12485:2023) has been prepared by Technical Committee CEN/TC 164 “Water
supply”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12485:2010.
Annexes A and B are informative. For further information on methodology see [2] to [6].
Significant technical differences between this edition and EN 12485:2017 are as follows:
a) Table 1 – XRF methods are added;
b) changed for requirements of water quality;
c) loss on ignition 550 °C changed to 500 °C;
d) unglazed porcelain or platinum crucible changed in glazed porcelain or platinum crucible.
1 Scope
This document specifies the methods used for the chemical analyses and the determination of physical
properties of calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide, calcium
magnesium carbonate and dolomitic lime used to treat water for human consumption.
This document specifies the reference methods and, in certain cases, an alternative method which can
be considered to be equivalent.
Any other methods may be used provided they are calibrated, either against the reference methods or
against internationally accepted reference materials, in order to demonstrate their equivalence.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 459-2, Building lime — Part 2: Test methods
EN 1017:2014+A1:2017, Chemicals used for treatment of water intended for human consumption — Half-
burnt dolomite
EN 1018:2021, Chemicals used for treatment of water intended for human consumption — Calcium
carbonate
EN 12518:2014, Chemicals used for treatment of water intended for human consumption — High-calcium
lime
EN 16003:2011, Chemicals used for treatment of water intended for human consumption — Calcium
magnesium carbonate
EN 16004:2011, Chemicals used for treatment of water intended for human consumption — Magnesium
oxide
EN 16409:2013, Chemicals used for treatment of water intended for human consumption — Dolomitic
lime
EN ISO 3696, Water for analytical laboratory use — Specification and test methods (ISO 3696)
ISO 3165, Sampling of chemical products for industrial use — Safety in sampling
ISO 4793:1980, Laboratory sintered (fritted) filters — Porosity grading, classification and designation
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at https://www.electropedia.org/
4 General requirements
4.1 Number of determinations
Two analyses shall be carried out to determine the various constituents (see Clause 6 to Clause 9; see
also 4.6).
4.2 Methods for analysis
The methods to be used for the analysis of half-burnt dolomite, calcium carbonate, high calcium lime,
magnesium oxide, calcium magnesium carbonate and dolomitic lime and the principle of each method
are listed in Table 1. Schematic diagrams of the analyses are given in Annex A (Figures A.1 to A.7).
The requirement values for free MgO and free Mg(OH) in half-burnt dolomite shall be expressed as
free MgO in accordance wit
...
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