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5. Glossary
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A chemical element that does not interact with the solution and can be easily identified by physicochemical methods.
water hardness
Indicator of water mineralization qualified by its Titre Hydrométrique, noted TH. This is expressed in mg.L -1 of CaCO 3 or in French degrees (symbol °f or °fH). One French degree corresponds to 10 mg of calcium carbonate or 4 mg.L -1 of calcium.
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Regulations
Arrêté du 30 juin 2006 relatif aux installations de traitements de surfaces soumises à autorisation au titre de la rubrique 2565 de la nomenclature des installations classées (JO n° 205 du 05/09/06).
European RoHS Directive (2002/95/EC) of 27/01/03 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (JOCE n° 37 of 13/02/13) – Text repealed by article...
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