BELIMED WD 290, Service Training

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Chemistry- chelating agents
Chelating agents (che-lating)
"tie up" the hardness in water. Dissolved
minerals in water are the cause of hardness.
Rain and distilled water is pure and soft, but
it quickly dissolves minerals (mainly calcium,
magnesium, iron and silica) as it soaks into
the ground and travels through rivers or
lakes. As the water becomes loaded with
dissolved minerals, it becomes hard.
Hardness in water will hinder the cleaning
ability of a cleaning solution. This is because
the detergents and other active ingredients in
the cleaner see the hardness minerals as
"soil". These actives are used up by the
hardness, and are not available to clean the
soil we want them to.