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SLOVENSKI STANDARD
01-julij-2022
Nadomešča:
SIST EN 15797:2010
Kemikalije, ki se uporabljajo za pripravo bazenske vode - Strjevanje na osnovi
železa
Chemicals used for the treatment of swimming pool water - Iron based coagulants
Produkte zur Aufbereitung von Schwimm- und Badebeckenwasser - Flockungsmittel auf
Eisenbasis
Produits chimiques utilisés pour le traitement de l’eau des piscines - Coagulants à base
de fer
Ta slovenski standard je istoveten z: EN 15797:2022
ICS:
13.060.25 Voda za industrijsko uporabo Water for industrial use
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 15797
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2022
EUROPÄISCHE NORM
ICS 71.100.80 Supersedes EN 15797:2010
English Version
Chemicals used for the treatment of swimming pool water
- Iron based coagulants
Produits chimiques utilisés pour le traitement de l'eau Produkte zur Aufbereitung von Schwimm- und
des piscines - Coagulants à base de fer Badebeckenwasser - Flockungsmittel auf Eisenbasis
This European Standard was approved by CEN on 20 April 2022.
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, Turkey 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 15797:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Description . 5
5 Purity criteria . 5
5.1 General. 5
5.2 Composition of commercial product . 6
5.3 Impurities and main by-products . 6
5.4 Chemical parameters. 6
6 Test methods . 6
7 Labelling - Transportation - Storage . 6
7.1 Means of delivery . 6
7.2 Labelling according to the EU legislation . 7
7.3 Transportation regulations and labelling . 11
7.3.1 General. 11
7.3.2 Iron (III) chloride . 11
7.3.3 Iron (III) sulfate liquid . 11
7.3.4 Iron (III) chloride sulfate . 11
7.4 Marking . 11
7.5 Storage . 12
7.5.1 Long term stability . 12
7.5.2 Storage incompatibilities . 12
Annex A (informative) General information on iron based coagulants . 14
A.1 Origin . 14
A.2 Use . 14
Annex B (normative) General rules relating to safety . 15
B.1 Rules for safe handling and use . 15
B.2 Emergency procedures . 15
Bibliography . 16
European foreword
This document (EN 15797:2022) 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 December 2022, and conflicting national standards
shall be withdrawn at the latest by December 2022.
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 15797:2010.
In comparison with the previous edition, the following technical modifications have been made:
a) modification of 7.3 on transportation regulations and labelling, adding the sentence “The user shall
be aware of the incompatibilities between transported products.”;
b) modification of 7.4 on marking. The requirements of marking are also applied to the accompanying
documents;
c) update of bibliography;
d) update of 7.2 according to EN 888, EN 890 and EN 891;
e) update of Clause 6.
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, Turkey and the United
Kingdom.
Introduction
In respect of potential adverse effects on the quality of water intended for human consumption caused
by the product covered by this document:
a) this document 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 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 document does not confer or imply acceptance or approval of the product in any of
the Member States of the EU or EFTA. The use of the product covered by this document is subject to regulation or
control by National Authorities.
1 Scope
This document is applicable to iron based coagulants (iron (III) chloride, iron (III) chloride sulfate and
iron (III) sulfate liquid) used directly or for the production of formulations for treatment of water for
swimming pools.
It describes the characteristics of iron based coagulants and specifies the requirements and the
corresponding test methods for iron based coagulants. It gives information on their use in swimming pool
water treatment. General information on iron based coagulants is given in Annex A.
It also determines the rules relating to safe handling and use (see Annex B).
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 888, Chemicals used for treatment of water intended for human consumption - Iron (III) chloride
EN 890, Chemicals used for treatment of water intended for human consumption - Iron (III) sulfate solution
EN 891, Chemicals used for treatment of water intended for human consumption - Iron (III) chloride sulfate
EN 17215, Chemicals used for treatment of water intended for human consumption - Iron-based coagulants
- Analytical methods
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at /ui
— IEC Electropedia: available at
4 Description
For the identification, the commercial form, the physical properties and the chemical properties see the
relevant subclauses of EN 888, EN 890 and EN 891.
5 Purity criteria
5.1 General
This document specifies the minimum purity requirements for iron based coagulants used for the
treatment of swimming pool water. Limits are given for impurities commonly present in the product.
Depending on the raw material and the manufacturing process, other impurities can 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 it is of appropriate
purity for treatment of swimming pool water, taking into account raw water quality, required dosage,
contents of other impurities and additives used in the products not stated in this document.
Limits have been given for impurities and chemicals 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 materials lead to significant quantities of impurities, by-products or additives being present, this
shall be notified to the user.
5.2 Composition of commercial product
The concentration of active matter in the product expressed as mass fraction in % of FeCl3, Fe (SO ) or
2 4 3
FeClSO shall be within ± 3 % of the manufacturer's declared values.
NOTE The concentration of iron active matter in commercial products varies. Typical values are given in
Table 1.
Table 1 — Typical values for the concentration of iron active matter in commercial products
Product Commercial form Concentration
Mass fraction in %
Solid 99 in FeCl3
Iron (III) chloride Solid hexahydrate 59 in FeCl3
Solution 40 in FeCl
Iron (III) sulfate Solution 30 in Fe (SO )
2 4 3
Iron (III) chloride sulfate Solution 36,9 in FeClSO4
5.3 Impurities and main by-products
The content of manganese, iron (II) and insoluble matters shall conform to the requirements specified in
EN 888, EN 890 and EN 891.
5.4 Chemical parameters
The content of arsenic, cadmium, chromium, mercury, nickel, lead, antimony and selenium for each grade
and type of products shall conform to the requirements specified in EN 888, EN 890 and EN 891.
6 Test methods
The methods for sampling and analysis are specified in EN 17215.
7 Labelling - Transportation - Storage
7.1 Means of delivery
Solids: the products shall be delivered in suitable packages, paper or plastics bags.
Liquids: the products shall be delivered in containers of corrosion-resistant materials suitable
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