| Chemical durability of glass containers are generally determined by
means of volumetric titration in terms of millilitres of N/100 HCI
consumed for titrating the aqueous extracts of the glass samples, as
prescribed by IS and other similar specifications. In the present
paper, the method and results of using sodium ion selective glass
electrode for assessing the chemical durability of six different types of
glass containers have been shown and discussed. From the extracts of
the respective glasses prepared by slightly modified IS method, the
Na+ contents in ppm were found out by the sodium ion selective glass
electrode and the results were compared with those obtained by titration,
where the equivalent Na+ figures had been calculated from the
ml of HCI consumed for the same. |
