They have a residue of 0.2 gram or less per litre (the established re
is the quantity of mineral salts dissolved in 1 litre of water).
They contain various mineral salts: sodium, calcium, magnesium, chlor
They are used as a drink;
they cure calculosis of the urinary tracts, chronic inflammations of
the urinary tracts, and pyorrhoea gout.
They are not recommended in the treatment of chronic nephritis,
hypertension, kidney failure or coronary decompensation.