Table 1: Precision data for Ambroxol and Doxofylline.

DrugConcentration ( g/mL)Intraday ( ) average SDC.V.Interday ( ) average SDC.V.

Ambroxol3.75 0.82 1.09
7.50 1.05 1.15
11.25 0.97 0.93

Doxofylline50 0.99 0.86
100 1.20 1.04
150 0.77 1.090