ISO 7203-3:1999, Fire extinguishing media -- Foam concentrates -- Part 3: Specification for low expansion foam concentrates for top application to water-miscible liquids

This part of ISO 7203 is applicable to low expansion foam concentrates which conform to ISO 7203-1. It specifies additional requirements to assess their suitability for use on water-miscible fuels.In this part of ISO 7203, the fire performance is tested using acetone as fuel, which also forms the basis for the performance classification. However, there are a large number of water-miscible liquids which have more or less different properties compared to acetone. It has been shown by tests using other fuels that the performances of various foams differ considerably. See clause 6.