Table 6 Ratios of the absorbance of the excipients to the absorbance of the control solution at the characteristic absorption wavelength.
Medium | Wavelength (nm) | Absorbance of placebo | Absorbance of standard | Ratio of placebo to standard (%) |
|---|---|---|---|---|
0.1 N Hydrochloric acid | 303 | 3.06E-04 | 0.81912 | 1.07E-03 |
pH 4.5 | 332 | 2.17E-02 | 0.41845 | 1.48E-01 |
pH 5.5 | 332 | 2.94E-03 | 0.94918 | 8.85E-03 |
PH 6.0 | 332 | 1.15E-02 | 0.52275 | 6.27E-02 |
PH 6.8 | 332 | 1.19E-02 | 2.0254 | 7.38E-01 |
