4. Conclusion
Comparison ofthe results ofthe two presented electrodes, given
in Table 4, indicates that the electrodes proposed in this study are
of comparable performance characteristics and both have a wide
range of selectivity with respect to a large number of inorganic
cations, and neutral molecules. The electrodes exhibitlong life span
(more than 60 days) in dry conditions, and have a stable usable pH
range and were successfully applied in the assay of Tol in its dosage
form and in complex biological matrixes under both batch and FIA
conditions. Thus, they can be used for routine analysis and verifi-
cation in quality assurance during manufacture of tolterodine and
related pharmaceuticals, as well as for constructing its dissolution
profile.
Acknowledgments
The Authors would like to express deep thanks and gratitude for
the research and development unit in Pharmacia Company, Egypt,
for supporting the raw material and all the quality control data
related to the raw material and dosage form assay, and above all, for
currently adopting the proposed electrodes in the dissolution testing
of the pharmaceutical preparation, Detrusitol® capsules, they
produce.