| | Chiarella | Chiarella | Chiarella | | | | | | | | Como | Como | Como | date of analysis / data analisi | | 09.01.92 | 09.01.97 | 24.04.01 | | | | | | Water temperature at spring °C | | 10,50 | 10,50 | 10,50 | Cryoscopic drop °C | | -0,01 | | | Acidity (pH) | | 7,70 | 7,80 | 7,70 | Conductivity K20 μS/cm | | 312,00 | 310,00 | 317,00 | Fixed Residue at 180°C (TDS) mg/L | | 187,30 | 185,50 | 193,00 | Carbon dioxide (CO2) mg/L | | 6,60 | 5,20 | 6,70 | Oxigen (O2) mg/L | | 9,20 | | | Nitrogen and rare gas (N) mg/L | | 18,00 | | | Silica (SiO2) mg/L | | 4,20 | 4,80 | 4,30 | Sodium (Na+) % | | | | 0,0001 | Sodium (Na+) mg/L | | 0,90 | 1,00 | 0,90 | Potassium (K+) mg/L | | 0,20 | 0,20 | 0,20 | Calcium (Ca++) mg/L | | 39,20 | 36,70 | 40,60 | Magnesium (Mg++) mg/L | | 21,50 | 22,90 | 22,10 | Aluminium (Al+++) mg/L | | 0,02 | | | Strontium (Sr++) mg/L | | 0,02 | | | Chloride (Cl-) mg/L | | 1,10 | 1,00 | 0,90 | Sulphates (SO4--) mg/L | | 10,10 | 9,80 | 8,60 | Bicarbonates (HCO3-) mg/L | | 210,50 | 210,50 | 217,80 | Fluoride (F-) mg/L | | 0,04 | | | Nitrates (NO3-) mg/L | | 4,80 | 5,50 | 7,50 | | | | | | analytical data / dati analitici | | 20 | 14 | 15 |
|