

n is the number of trials. * These values represent the corresponding tabulated values of t and F at p=0.05. a.Reported method was a spectrophotometric method for A by measuring the absorbance of A in 0.1M HCl at 244 nm. b.HPLC for the determination of G on C18 column, mobile phase (KH_{2}PO_{4}methanol, 55:45; v/v, pH3), Flow rate 1 ml/min UV detection at 220 nm. 

Table 6: Statistical comparison of the results obtained by the proposed methods and the reference reported methods for pure samples of Ambroxol HCl and Guaifenesin. 