Mineral water is unpolluted underground mineral water that gushes naturally from deep underground or is exposed artificially. Contains a certain amount of mineral salts, trace elements or carbon dioxide gas; In general, its chemical composition, flow rate, water temperature and other dynamics are relatively stable within the natural fluctuation range. Mineral water is formed in deep circulation, containing minerals and limited indicators stipulated by national standards.
Mineral water is water containing dissolved minerals or more gases. The nine boundary indicators specified in national standards include lithium, strontium, zinc, selenium, bromide, iodide, metasilicic acid, free carbon dioxide and dissolved total solids. One or more kinds of mineral water must meet the requirements of boundary indicators.
The required contents are (in mg/L): lithium, strontium, zinc, iodine ≥0.2, selenium ≥0.0 1, bromine ≥ 1.0, metasilicic acid ≥25, free carbon dioxide ≥250, and total dissolved solids ≥ 1000. Most mineral water in the market belongs to strontium (Sr) type and metasilicate type, but there are also mineral water with other mineral components.