Table 7 Robustness of the method by changing flow rate ( n = 3) (concentration 100μg/mL)
From: Stability-indicating RP-HPLC method for the determination of 6-gingerol in polyherbal formulations
Flow rate (mL/min) methanol:H 3 PO 3 in H 2 O | Mean area ± SD | Mean R t ± SD | %RSD of area | %RSD of R t | ||
|---|---|---|---|---|---|---|
Actual | Used | Level | ||||
1 | 0.8 | −2 | 9,811,472 ± 83,932 | 14.1 ± 0.1 | 0.84 | 0.70 |
1 | 0 | 9,929,473 ± 51,018 | 13.4 ± 0.05 | 0.51 | 0.43 | |
1.2 | +2 | 9,827,873 ± 74,959 | 13.1 ± 0.15 | 0.75 | 1.1 | |