Chemical processes and technology
39
Reaction between process chemicals and soiling
Problem
Measures
Natural oils and fats can be emulsified with
alkaline process chemicals. This can lead to
a heavy build-up of foam.
– Use the
Oil
programme.
– Use a special programme that dispenses
pH-neutral emulsifiers containing surfact-
ants in the pre-rinse.
– Depending on the application, use de-
foaming agents that do not contain silic-
one oils.
Stains containing high protein levels, such
as blood, can cause a heavy build-up of
foam when processed with alkaline process
chemicals.
– Select a cleaning programme with at least
one short pre-rinse in cold water.
Non-precious metals, such as aluminium,
magnesium and zinc, can release hydrogen
when processed with very acidic or alkaline
process chemicals (oxyhydrogen reaction).
– Please observe the process chemical
manufacturer’s instructions.
