NBN EN 1568-2 : 2008 COR 2010

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Sediment in the foam concentrate
5 Viscosity of the foam concentrate
6 pH of the foam concentrate
7 Surface tension of the foam solution
8 Spreading coefficient of the foam solutions
9 Expansion and drainage of foam
10 Test fire performance
11 Container marking
Annex A (informative) Grades of foam concentrates
Annex B (normative) Preliminary sampling of foam
                    concentrates
Annex C (normative) Determination of percentage sediment
Annex D (normative) Viscosity measurement for pseudoplastic
                    foam concentrate
Annex E (normative) Temperature conditioning of foam
                    concentrates
Annex F (normative) Determination of surface tension and
                    spreading coefficient
Annex G (normative) Determination of expansion and drainage
                    time
Annex H (normative) Determination of test fire performance
Annex K (informative) A-deviations
Bibliography

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