temporary hardness

noun

chem hardness of water due to the presence of magnesium and calcium hydrogencarbonates, which can be precipitated as carbonates by boiling

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Temporary hardness is caused by a soluble lime compound which is precipitated by boiling.

The hardness of water may be of two kinds,— temporary hardness and permanent hardness.

Temporary hardness can be overcome by boiling the water (20 to 30 minutes) before using.

That which has been removed by the boiling is the temporary hardness.

For every degree of temporary hardness a depth of 1-6/10 in.

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