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Table 3 Potentiometric determination of laboratory prepared mixtures containing various ratios of FEX and MON

From: New pencil graphite electrodes for potentiometric determination of fexofenadine hydrochloride and montelukast sodium in their pure, synthetic mixtures, and combined dosage form

Ratio Recovery %
FEX MON FEX MON
Sensor 1 Sensor 3 Sensor 2 Sensor 3
1 1 98.40 98.22 99.31 98.89
5 1 97.27 97.13 99.97 99.20
10 1 100.92 100.52 101.62 101.12
12 1 101.16 100.99 98.40 98.14
1 12 97.72 97.56 97.58 97.33
Mean ± SD 99.09 ± 1.82 98.88 ± 1.76 99 ± 1.84 98.94 ± 1.42