Drug Dissolution Testers measure how fast and how completely the active ingredient leaves a tablet, capsule or granule, the test regulators use to confirm that each batch will release the drug as designed. Vessels sit in a water bath held at 37 degrees C to match body temperature, while USP Apparatus 1 baskets or Apparatus 2 paddles rotate at a set speed in the dissolution medium. Samples are drawn manually or automatically at fixed intervals, and software builds the release profile in real time. Methods follow USP, EP and JP, with 21 CFR Part 11 readiness. Typical uses include batch release QC, formulation development, bioequivalence of generics and stability studies.