| Parameters |
SD of peak area for ropinirole standard |
% RSD of peak area for ropinirole standard |
| Mobile phase composition |
16.12 |
0.53 |
| Mobile phase volume |
17.23 |
0.56 |
| Development distance |
30.40 |
1.01 |
| Relative humidity |
31.84 |
1.05 |
| Duration of saturation |
22.14 |
0.73 |
Activation of prewashed
TLC plates |
18.36 |
0.60 |
| Time from spotting to chromatography |
32.45 |
1.07 |
| Time from chromatography to scanning |
41.29 |
1.37 |
*each parameter was repeated for six times