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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