prEN 1568-3

SLOVENSKI STANDARD
01-junij-2025
Gasila - Penila - 3. del: Specifikacija za penila za težko peno za površinsko
uporabo pri tekočinah, netopnih v vodi
Fire extinguishing media - Foam concentrates - Part 3: Specification for low expansion
foam concentrates for surface application to water-immiscible liquids
Feuerlöschmittel - Schaummittel - Teil 3: Anforderungen an Schaummittel zur Erzeugung
von Schwerschaum zum Aufgeben auf mit Wasser nicht mischbaren Flüssigkeiten
Agents extincteurs - Émulseurs - Partie 3 : Spécifications pour les émulseurs à bas
foisonnement destinés à une application à la surface de liquides n'ayant pas d'affinité
pour l'eau
Ta slovenski standard je istoveten z: prEN 1568-3
ICS:
13.220.10 Gašenje požara Fire-fighting
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2025
ICS 13.220.10
English Version
Fire extinguishing media - Foam concentrates - Part 3:
Specification for low expansion foam concentrates for
surface application to water-immiscible liquids
Agents extincteurs - Émulseurs - Partie 3 : Feuerlöschmittel - Schaummittel - Teil 3:
Spécifications pour les émulseurs à bas foisonnement Anforderungen an Schaummittel zur Erzeugung von
destinés à une application à la surface de liquides Schwerschaum zum Aufgeben auf mit Wasser nicht
n'ayant pas d'affinité pour l'eau mischbaren Flüssigkeiten
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 191.
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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1568-3:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 7
Introduction . 8
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
4 Sediment in the foam concentrate . 12
4.1 Sediment before ageing . 12
4.2 Sediment after ageing . 12
5 Freezing point. 12
6 Viscosity of the foam concentrate . 12
6.1 Test temperatures . 12
6.2 Newtonian foam concentrates . 12
6.3 Pseudo-plastic foam concentrates . 12
7 pH of the foam concentrate . 12
8 Surface tension of the foam solution . 13
9 Stability/separation test of foam concentrate . 13
10 Determination of expansion and drainage time . 13
10.1 Before temperature conditioning . 13
10.2 After temperature conditioning . 13
11 Test fire performance . 14
12 Occupational health and ecotoxicological information . 15
13 Annual foam quality check . 15
13.1 General . 15
13.2 Principles . 15
13.3 Types of analysis . 16
14 Expansion performance comparison test . 17
15 Technical information sheet . 17
16 Container marking . 17
Annex A (informative) Grades of foam concentrate and performance . 19
A.1 Grades. 19
A.2 Typical performance . 19
Annex B (normative) Sampling of foam concentrates . 21
Annex C (normative) Determination of percentage sediment . 22
C.1 Sampling . 22
C.2 Apparatus . 22
C.3 Procedure. 22
Annex D (normative) Freezing point determination . 23
D.1 General . 23
D.2 Apparatus . 23
D.3 Procedure . 23
D.4 Example of a temperature against time curve for evaluation . 24
Annex E (normative) Determination of Viscosity for pseudo-plastic foam concentrates . 25
E.1 Pseudo-plastic foam concentrates . 25
E.2 Viscosity determination . 25
E.2.1 Apparatus . 25
E.2.2 Viscosity measurement . 25
E.2.3 Results . 26
Annex F (normative) Temperature conditioning of foam concentrates . 27
F.1 General . 27
F.2 Low temperature conditioning . 27
F.2.1 Apparatus . 27
F.2.2 Procedure . 27
F.3 High temperature conditioning . 27
F.3.1 Apparatus . 27
F.3.2 Procedure . 27
F.4 Division into top and bottom half-samples . 28
F.4.1 Apparatus . 28
F.4.1.1 Top half-sample container(s) . 28
F.4.1.2 Divider device . 28
F.4.2 Procedure . 29
Annex G (normative) Determination of surface tension . 30
G.1 Solution of foam concentrate . 30
G.2 Procedure — Surface tension . 30
Annex H (normative) Stability/Separation test of foam concentrate . 31
H.1 General . 31
H.2 Apparatus . 31
H.3 Procedure . 31
Annex I (normative) Determination of expansion and drainage time . 32
I.1 Apparatus . 32
I.2 Temperature conditions . 32
I.3 Procedure . 32
I.4 Simulated fresh and sea water . 33
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