Analysis of a spring water

Hardness of water

“Water hardness" is the amount of calcium and magnesium ions. This hardness, or hydrometric title (H.T.), is expressed in “French degrees” (°fH):

1 °fH = 4 mg/L (Ca2+) = 2.4 mg/L (Mg2+)

Water hardness can be determined by using test strips.
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