Class-A foam concentrates

is a new, refined, highly concentrated foam agent based on foam-forming active ingredients, which are specially designed for extinguishing solid fuel fires (fire class A), as well as for use with compressed air foam system (CAFS). Upwards from 0.1% proportioning rate, STHAMEX® -class A is suitable for use as a wetting agent and, upwards from 0.3%, for CAFS applications. For extinguishing liquid fires (fire class B), the induction rate is 0.5%.

STHAMEX®-class A
Proportioning rate
Class A fires from 0.3%
Class B fires 0.5%
Expansion
Low-expansion foam up to 20times
Medium-expansion foam up to 200times
25% / 50% drain time
Low-expansion foam up to 10 / 15 minutes
Medium-expansion foam up to 10 / 20 minutes
Frost-resistant - 15 °C
Viscosity
20 °C≤ 20 mm2/s
0 °C≤ 50 mm2/s
lowest use temp. ≤ 150 mm2/s

Primary use: Municipal fire brigades, industry, recycling industry, waste treatment plants

Main application: Solid material fires, wildfires, non-polar hydrocarbons and solvents, plastics, recyclables

Installations and equipment: CAFS, Hollow stream nozzles, medium-expansion foam branchpipes, low-expansion foam branchpipes, foam / water monitors, foam / water branchpipes

All class-A foam concentrates are fluorine-free, physiologically safe when used as intended, and readily 100% biodegradable.

is a highly concentrated foam agent based on fully biodegradable surfactant compounds, developed especially for use on class A fires. STHAMEX® -class A classic is designed in particular for extinguishing ember forming solid material fires in combination with CAFS. The proportioning rate for extinguishing liquid fires (fire class B) is 1%.

STHAMEX® - class A Classic
Proportioning rate
Class A fires from 0.5%
Class B fires 1%
Expansion
Low-expansion foam up to 20times
Medium-expansion foam up to 200times
25% / 50% drain time
Low-expansion foam up to 10 / 15 minutes
Medium-expansion foam up to 10 / 20 minutes
Frost-resistant - 15 °C
Viscosity
20 °C≤ 50 mm2/s
0 °C≤ 20 mm2/s
lowest use temp. ≤ 150 mm2/s

Primary use: Municipal fire brigades, industry, recycling industry, waste treatment plants

Main application: Solid material fires, wildfires, non-polar hydrocarbons and solvents, plastics, recyclables

Installations and equipment: CAFS, Hollow stream nozzles, medium-expansion foam branchpipes, low-expansion foam branchpipes, foam / water monitors, foam / water branchpipes

All class-A foam concentrates are fluorine-free, physiologically safe when used as intended, and readily 100% biodegradable.