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2. Chemical properties of water
2.1 Mineral content
Mineral content concerns water in general, and drinking water in particular. It determines the extent to which the presence of salts (salinity), calcium and magnesium (hardness or TH titre), bases and acids (alkalinity, acidity: TA titre and pH) is acceptable in drinking water, and determines how it should be treated to prevent damage to equipment and installations.
SCROLL TO TOP2.2 Salinity
Salinity is expressed in grams or milligrams of soluble salts per liter of water.
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Chemical properties of water
Drinking water
Standards and norms
- Medical gas distribution systems – Part 1: Compressed medical gases and vacuum distribution systems - NF EN ISO 7396-1 - 11-07
- Medical gas distribution systems – Part 1: Compressed medical gases and vacuum distribution systems – Amendment 1: requirements for wall-mounted vacuum outlets mounted on medical ducts with operator-adjustable cross-sections and connected to ducts by flexible hoses - NF EN ISO 7396-1/A1...
Regulatory texts
Water Act of January 3, 1992
Articles L640 and L641 of the Civil Code on the general status of rainwater
Order of October 22, 1982 on safety devices for medical gas distribution equipment
Circular of October 10, 1985 on the distribution of gases for medical use and the creation of a local commission to oversee this distribution.
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