This photograph shows a label from a bottle of mineral water, with a rundown of the contents' chemical analysis. The heading reads 'typical analysis', then the contents are measured in mg/1. The contents are: calcium, 55; magnesium, 19; potassium, 1; sodium, 24; bicarbonate, 248; chloride, 37; sulphate, 13; nitrate, <0.1; iron, 0; aluminium, 0; dry residue at 180°C, 280. The pH at source is listed as 7.4.