Last edited 30 Jul 2020

Hardness

Archaeometallurgy, Guidelines for Best Practice, published by Historic England in 2015, defines hardness as: ‘…a measurement of the strength of a material (its ability to resist plastic deformation).’

The word 'hardness' may also be used to refer to water that contains a high amount of dissolved calcium and magnesium. Hard water is found in areas which have a chalk and limestone geology. Soft water has a low level of calcium and magnesium compounds.

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