Low expansion foam
is used for extinguishing fires of liquids and solid materials due to its exceptionally good flowability. The foam distributes itself over the entire surface of the fire within a very short time and provides an air-tight seal.

When fighting fires of solid materials, its good adhesiveness even on vertical surfaces and bulky incendiary matter has a particularly favourable effect. Special application methods, for example, CAFS, support this effect. Used as a preventive measure, low expansion foam suppresses the emission of flammable gases. The flammable material remains covered by a gas-tight, insulating and cooling foam layer for a long period. Thanks to its relatively high weight, a wide projection range can be attained with low expansion foam which makes a fire fighting operation possible from a safe distance.

Aqueous film forming foam concentrates such as STHAMEX-AFFF, MOUSSOL-APS, FOAMOUSSE-FFFP can be used in both expanded and non-aspirated form as an aqueous solution, for example, an airports, in petrol depots, in plastics processing and recycling industries, an ships as well as in the on- and off-shore sectors. These foam concentrates are also suitable for use in sprinkler and deluge Systems. The foam's high water releasing capacity supports the formation of an aqueous film and thus improves the flowability. The low surface tension of the foam solution increases the wetting effect when extinguishing fires of solid materials.

Medium expansion foam
Thanks to its wide expansion range, medium expansion foam can be used for numerous applications:
At 50 to 100 times expansion for fires of plastics, tires, and liquids and also to extinguish glowing fires; at 100 to 200 times expansion to flood flat spaces, for example, channels, pits, shafts, etc. and everywhere where a successful fire fighting operation depends an a fast build-up of large amounts of foam. Projection ranges of approx. 12 m can be attained using medium expansion foam thus making a relatively gentle foam application possible. The foam spreads quickly over the surface of the fire and forms a closed, gas-tight cover. A particularly swift and successful fire fighting operation is achieved with the alcohol resistant AFFF foam concentrate MOUSSOL-APS when dealing with polar liquids. Medium expansion foam generators designed for industrial fire protection operate with an expansion ratio of approx. 1:25 up to 1:35. They attain projection ranges of approx. 35 m.

High expansion foam
develops its full fire extinguishing effect particularly against fires in spatially restricted sections. Thanks to its extremely high expansion rate, even large areas such as airplane hangars or warehouses can be completely flooded within a short time. High expansion foam is applied into the object to be protected from outside by means of a suitably sized hose (conduit pipe) or is produced within the object by means of special high expansion foam generators using the hot combustion gases (Inside Air or Hot Foam systems). The water content in the foam is so low that water damage is minimised to a great extent.
Used as a preventive measure, high expansion foam suppresses flammable gases and provides effective protection against the effects of flames and heat.