Evaluation of elixirs
Physical stability:
The elixir should appear as clear liquid and no solid particle should be present in elixir.
Viscosity determination:
Viscosity of elixir is determined using various viscometers like Ostwald viscometer, cup & bob viscometer, Brookfield viscometer etc.
pH determination:
pH of elixir is determined using pH meter and it should be in range of 6-7.
Refractive index:
Refractive index of elixir is determined and it should be optimum as per different pharmacopeias.
Determination of alcohol:
The alcohol concentration in elixir is in range of 5-40% and it is determined using HPLC or UV spectrophotometer.
Content uniformity test: Same as in syrup
