The performance of the fabricated SPE and CPE has been tested by
titrating DPH with NaTPB on different days ranged from one day to
70 days and the measurement of the total potential change, potential
break at the end point and end point are recorded daily. The data
obtained for SPE are shown in Fig. 4. For SPE, it is clear that there is a
35% change in the potential break at the end point after 63 days. While
for CPE, there is a change in the potential break at the end point by 29%
after 55 days. Therefore, SPE and CPE sensors can be used for 63 and
55 days, respectively.
This indicates that all the fabricated sensors have high mechanical
durability and good adherent to the PVC substrate. Both dry and wet
ion-sensitive membranes adhere very tightly to the conductive track
and the substrate material. Mechanical separation of these layers is
impossible as the consecutive thick-films forming the sensor contain
the same polymer matrix material. For the determination of the
storage stability, SPE sensor fabricated in the same production cycle
has been used. Although the electrode is a disposable device, a longer
stability test is also investigated and the electrodes are successfully
used for at least 50 consecutive measurements.
The performance of the fabricated SPE and CPE has been tested bytitrating DPH with NaTPB on different days ranged from one day to70 days and the measurement of the total potential change, potentialbreak at the end point and end point are recorded daily. The dataobtained for SPE are shown in Fig. 4. For SPE, it is clear that there is a35% change in the potential break at the end point after 63 days. Whilefor CPE, there is a change in the potential break at the end point by 29%after 55 days. Therefore, SPE and CPE sensors can be used for 63 and55 days, respectively.This indicates that all the fabricated sensors have high mechanicaldurability and good adherent to the PVC substrate. Both dry and wetion-sensitive membranes adhere very tightly to the conductive trackand the substrate material. Mechanical separation of these layers isimpossible as the consecutive thick-films forming the sensor containthe same polymer matrix material. For the determination of thestorage stability, SPE sensor fabricated in the same production cyclehas been used. Although the electrode is a disposable device, a longerstability test is also investigated and the electrodes are successfullyused for at least 50 consecutive measurements.
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