Quality assessment of slanic-moldova mineral waters stored in reusable bottles

This paper reports the preliminary results concerning the evaluation of the effect of time and storage conditions on some physicochemical characteristics (pH, conductivity, total dissolved solids and salinity) for 9 mineral waters samples collected from Slănic-Moldova and stored in reusable plastic drinking water bottles. The experimental data show that for the first storage period, respectively 1 month for the samples kept at ambient temperature and 3 months for the samples stored at 4 °C, there were no changes in the analyzed parameters. Significant variations in pH and conductivity were observed after 6 months for 7 out of 9 samples stored at 4 °C and after 3 months for 6 out of 9 samples stored at 20 °C. Also, is noted that the samples stored at 4 °C (in the dark) for 12 months preserved their characteristics better than those stored at ambient temperature for 9 months.