PREN 1568-4 : DRAFT 2016

European foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Sediment in the foam concentrate
5 Freezing point
6 Viscosity of the foam concentrate
7 pH of the foam concentrate
8 Surface tension of the foam solution
9 Evaluation of aqueous film formation
10 Expansion and drainage of foam
11 Test fire performance
12 Stability/Separation test
13 Occupation health and ecotoxicological evaluation
14 Technical data sheet
15 Container marking
Annex A (informative) - Grades of foam concentrate
Annex B (normative) - Preliminary sampling of foam
        concentrates
Annex C (normative) - Determination of percentage
        sediment
Annex D (normative) - Determination of Viscosity for
        pseudo-plastic foam concentrates
Annex E (normative) - Temperature conditioning of foam
        concentrates
Annex G (normative) - Determination of expansion and
        drainage time
Annex H (normative) - Determination of test fire performance
Annex I (informative) - Small scale fire test
Annex J (informative) - Description of a radiation measurement
        method
Annex K (normative) - Freezing Point Determination
Annex L (normative) - Evaluation of film formation
Annex M (normative) - Stability/Separation test of foam
        concentrate
Annex N (normative) - Occupational health and ecotoxicological
        testing
Annex O (informative) - Technical data sheet
Annex P (informative) - A-Deviations
Bibliography

Defines requirements for chemical and physical properties, and minimum performance requirements of low expansion foams suitable for surface application to water-miscible liquids.