Soft water

Soft water is the term used to describe types of water that contain few or no calcium or magnesium ions. The term is usually relative to hard water, which does contain significant amounts of such ions.

Additional recommended knowledge

What is the Correct Way to Check Repeatability in Balances?

What is the Sensitivity of my Balance?

Don't let static charges disrupt your weighing accuracy

Soft Water usually comes from peat or igneous rock sources, such as granite but may also derive from sandstone sources, since such sedimentary rocks are usually low in calcium and magnesium.