Foam Fire Protection

STHAMER-foam concentrates can be
stored for many years without any
problems in their original containers or
other suitable storage facilities upon
observation of our storage recommendations.
Temperature fluctuations
between +50 °C and the freezing point
of the foam concentrate do not impair
their quality. This also applies to shortterm
freezing and thawing.
Frost resistance
of foam concentrates is required
where freezing temperatures are
expected during longer operations or
storage.
Compatibility with other foam
concentrates
Principally, protein foam concentrates
may not be mixed with synthetic foam
concentrates. Foam concentrates of
the same type, however, can be mixed
to any desired ratio upon immediate
usage. When supplementing foam
concentrate stocks, it is advisable to
have a compatibility test carried out by
our laboratory. The product data
sheets contain additional information.
Physiological properties
STHAMER-fire extinguishing agents
are physiologically harmless. Adverse
physical effects are not to be expected
when they are applied according to
their intended purpose. For further
information, please refer to the product
and safety data sheets.
The pH value
may be an indicator for quality changes.
If it drops sharply, for example, in
the case of a protein foam concentrate,
the results are increased sedimentation
and premature ageing; in the
case of a synthetic foam concentrate,
the product is likely to decompose and
lose its fire extinguishing capability.
Training/practising
During and after training or practising
with foam the local regulations on
disposal of foam solutions should be
observed. Foam solutions should not
be drained into watercourses or soils.
Environmental compatibility
is particularly important because foam
is often used on soil and the foam
solution can ingress into the ground.
STHAMER-foam concentrates have
good or excellent biological decomposition
properties.
The viscosity
of a foam concentrate is important for a
constant induction rate at low temperatures
and for specifying foam concentrate
pumps in fixed fire extinguishing
installations.
Depending on the application temperature
pump-supported induction may be
necessary for highly viscous foam concentrates