Table 2 Robustness Study (n = 3)
From: Stress degradation studies and stability-indicating TLC-densitometric method of glycyrrhetic acid
Standard level | Mobile phase composition | Saturation time | Nature of TLC | Time from spotting to chromatography | Time from chromatography to scanning | |||||
|---|---|---|---|---|---|---|---|---|---|---|
Amount (ng/spot) | Amount detected (ng ± S.D.) | R.S.D. (%) | Amount detected (ng ± S.D.) | R.S.D. (%) | Amount detected (ng ± S.D.) | R.S.D. (%) | Amount detected (ng ± S.D.) | R.S.D. (%) | Amount detected (ng ± S.D.) | R.S.D. (%) |
300 | 306.16 ± 3.78 | 1.22 | 304.45 ± 3.66 | 1.20 | `302.81 ± 2.72 | 0.89 | 303.39 ± 2.86 | 0.94 | 301.7 ± 5.67 | 1.90 |
500 | 512.97 ± 4.15 | 0.81 | 514.78 ± 3.32 | 0.64 | 515.1 ± 5.06 | 0.98 | 511.88 ± 4.01 | 0.78 | 517.9 ± 5.46 | 1.05 |
700 | 716.63 ± 5.62 | 0.78 | 711.2 ± 3.82 | 0.54 | 717.35 ± 10.24 | 1.42 | 720.48 ± 4.99 | 0.69 | 715.58 ± 5.76 | 0.806 |