Evaluation of elixirs
The elixir should appear as clear liquid and no solid particle should be present in elixir.
Viscosity of elixir is determined using various viscometers like Ostwald viscometer, cup & bob viscometer, Brookfield viscometer etc.
pH of elixir is determined using pH meter and it should be in range of 6-7.
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