Table 5 Results of robustness and ruggedness expressed as intermediate %RSD values
From: Development of membrane electrodes for selective determination of lisinopril in pharmaceuticals
ISE | Concentration of LNP, mmol l−1 | %RSD values for varied parameters | |||
|---|---|---|---|---|---|
Robustness | Ruggedness | ||||
pH | Temperature | Inter-potentiometric | Inter-analysts | ||
LNP-PTA | 0.075 | 2.56 | 3.52 | 2.23 | 3.43 |
0.500 | 3.23 | 3.45 | 2.12 | 2.54 | |
1.000 | 2.21 | 2.98 | 2.22 | 3.56 | |
LNP-PMA | 0.075 | 1.98 | 2.14 | 2.14 | 2.18 |
0.500 | 2.89 | 3.11 | 3.22 | 3.66 | |
1.000 | 1.99 | 2.11 | 2.14 | 4.00 | |