5 What are the other test done for capsule that are official in the USP?

In addition to disintegration and dissolution tests, the United States Pharmacopeia (USP) outlines several other official tests for capsules. These include tests for content uniformity, which ensures that each capsule contains the specified amount of active ingredient, and moisture content determination, which assesses the water content that may affect stability. Additionally, the USP may require testing for microbial limits to ensure safety and purity. Lastly, capsule appearance and identification tests may also be included to verify the physical characteristics.