**7.11** *In vitro* **dissolution study**

Under standardised circumstances of liquid/solid interface, temperature, and solvent concentration, dissolution is defined as the quantity of drug material that enters the solution per unit time. For dissolving testing, any of the pharmacopoeia's standard basket or paddle apparatus can be utilised. The dissolving medium will be chosen based on the sink circumstances and the greatest dosage of API. The temperature of the dissolving media should be kept at 37 � 0.5°C and the rotational speed at 50. The paddle device has the problem of causing oral films to float above the dissolving liquid when used [71].
