EN 1302:2024

SLOVENSKI STANDARD
01-februar-2025
Nadomešča:
SIST EN 1302:2000/AC:2002
Kemikalije, ki se uporabljajo za pripravo pitne vode - Koagulanti na osnovi
aluminija - Analitske metode
Chemicals used for treatment of water intended for human consumption - Aluminium-
based coagulants - Analytical methods
Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch -
Flockungsmittel auf Aluminiumbasis - Analytische Methoden
Produits chimiques utilisés pour le traitement de l'eau destinée à la consommation
humaine - Coagulants à base d'aluminium - Méthodes d'analyse
Ta slovenski standard je istoveten z: EN 1302:2024
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.

EN 1302
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2024
EUROPÄISCHE NORM
ICS 71.100.80 Supersedes EN 1302:1999
English Version
Chemicals used for treatment of water intended for human
consumption - Aluminium-based coagulants - Analytical
methods
Produits chimiques utilisés pour le traitement de l'eau Produkte zur Aufbereitung von Wasser für den
destinée à la consommation humaine - Coagulants à menschlichen Gebrauch - Flockungsmittel auf
base d'aluminium - Méthodes d'analyse Aluminiumbasis - Analytische Methoden
This European Standard was approved by CEN on 2 September 2024.

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, 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.
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. EN 1302:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Methods of analysis . 5
5 Sampling . 8
5.1 General. 8
5.2 Solids . 8
5.3 Solutions . 8
5.3.1 Sampling from drums and bottles . 8
5.3.2 Sampling from tanks and tankers . 8
6 Expression of results . 9
6.1 Aluminium content. 9
6.2 Iron . 9
6.3 Sodium, calcium, chloride, sulfate and silicate . 9
6.4 Free acid . 9
6.5 Basicity . 9
6.6 Insoluble matters . 9
6.7 Chemical parameters. 9
6.8 Repeatability . 9
Annex A (normative) Analysis of aluminium content . 10
Annex B (normative) Analysis of chemical parameters . 16
Annex C (informative) Analyses of chemical parameters – alternative methods . 36
European foreword
This document (EN 1302:2024) 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 June 2025, and conflicting national standards shall be
withdrawn at the latest by June 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 1302:1999.
In comparison with the previous edition, the following technical modifications have been made:
— Replacement of the withdrawn aluminium product standards EN 881 and EN 883 by EN 17034.
— Replacement of the withdrawn mercury analysing standard ISO 5666-1:1983 by ISO 12846:2012.
— Removal of the withdrawn standard ISO 6382:1981. As there was no replacement, the analysing
method for silicate content based on this standard was removed. To analyse silicon this standard
applies ICP-OES as given in Annex B.
— Removal of routine methods used to determinate arsenic. Method: Silver diethyldithiocarbamate
spectrophotometric method based on standard ISO 6595:1982 as this standard has been withdrawn
without replacement. This standard applies ICP-OES as given in Annex B.
— Removal of routine methods used to determinate iron. Method: 1,10-Phenanthroline
spectrophotometric method based on standard ISO 6685:1982 as this standard has been withdrawn
without replacement. This standard applies ICP-OES as given in Annex B.
2+
— Removal of a method for determination of iron (total and Fe ) (volumetric method) as the method
uses potassium dichromate and there are other options for iron determination. This standard applies
ICP-OES as given in Annex B.
— Update of the clause titles to correspond the CEN Standard form.
— Update of Table 1 and 2 to correspond the analytical methods available in the standard.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According 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, 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 the United
Kingdom.
1 Scope
This document is applicable to aluminium-based coagulants used for treatment of water intended for
human consumption. It specifies analytical methods to be used for products described in EN 878, EN 882,
EN 885, EN 886, EN 887, EN 935 and EN 17034.
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 878, Chemicals used for treatment of water intended for human consumption — Aluminium sulfate
EN 882, Chemicals used for treatment of water intended for human consumption — Sodium aluminate
EN 885, Chemicals used for treatment of water intended for human consumption — Polyaluminium chloride
hydroxide silicate
EN 886, Chemicals used for treatment of water intended for human consumption — Polyaluminium
hydroxide silicate sulfate
EN 887, Chemicals used for treatment of water intended for human consumption — Aluminium iron (III)
sulfate
EN 935, Chemicals used for treatment of water intended for human consumption — Aluminium iron(III)
chloride (monomeric) and aluminium iron(III) chloride hydroxide (monomeric)
EN 17034, Chemicals used for treatment of water intended for human consumption — Aluminium chloride
anhydrous, aluminium chloride basic, dialuminium chloride pentahydroxide and aluminium chloride
hydroxide sulfate
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 5725-2, Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method
for the determination of repeatability and reproducibility of a standard measurement method
ISO 6206:1979, Chemical products for industrial use — Sampling — Vocabulary
ISO 6227:1982, Chemical products for industrial use — General method for determination of chloride
ions — Potentiometric method
ISO 8213, Chemical products for industrial use — Sampling techniques — Solid chemical products in the
form of particles varying from powders to coarse lumps
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
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/
3.1
laboratory sample
sample as prepared for sending to the laboratory and intended for inspection or testing
[SOURCE: ISO 6206:1979]
3.2
test sample
sample prepared from the laboratory sample and from which test portions will be taken
[SOURCE: ISO 6206:1979]
3.3
test portion
quantity of material drawn from the test sample (or from the laboratory sample if both are the same) and
on which the test or observation is actually carried out
[SOURCE: ISO 6206:1979]
4 Methods of analysis
The methods of analysis are used to analyse the product quality. Table 1 lists the methods which shall be
used for analysis of aluminium-based coagulants composition as commercial product and the principles
of each method. The normative methods which shall be used are described in full in Annexes A and B.
Other methods can be used for quality control. Examples of other methods are mentioned in Annex C.
Table 2 lists the methods which shall be used for analysis of other chemical parameters. These are
applicable to all aluminium based coagulants (EN 878, EN 882, EN 885, EN 886, EN 887, EN 935
and EN 17034). The relevant limit value for each coagulant is available in the product standard.
Table 1 — Methods of analysis of the composition of commercial product
Reference Informative
Determination EN 878 EN 882 EN 885 EN 886 EN 887 EN 935 EN 17034 Principle Annex
method method
a
Aluminium x  x  x x x x x EDTA complexometric titration A.1
Aluminium  x x  x x x x x CDTA complexometric titration C.8.
Aluminium x   x      Gluconate A.2
Iron x  x x x x x x x ICP-OES B.7
Iron  x x x x x x x x FAAS C.4
b
Iron  x x x x x x x x ICP-MS C.2
Sodium x  x  x x x x x ICP-OES B.7
Sodium  x   x x    FAAS C.5
Sodium  x  x      Gluconate A.2
Calcium  x   x x   x FAAS C.6
Calcium x    x x   x ICP-OES B.7
Chloride x    x   x x Potentiometric titration B.1
Sulfate x  x   x x  x Barium sulfate gravimetric titration B.2
Silicon x  x x x x x x x ICP-OES B.7
Free acid   x    x x x Acidimetric titration B.3
Basicity x  x x   x x x Acidimetric titration, oxalate method B.4
Basicity x    x x    Acidimetric titration, KF method B.5
Basicity  x        Calculation method C.7
Key
FAAS: Flame Atomic Absorption Spectrometry
AFS: Atomic Fluorescence Spectrometry
ICP-OES: Inductively Coupled Plasma Optical Emission Spectrometry
ICP-MS: Inductively Coupled Plasma Mass Spectrometry
a
If the concentration of iron is higher than 0,1 %, the calulation needs to be corrected due to interferences of
...