Reciprocating Cylinder Dissolution Instrument, simulates gastrointestinal conditions by simple programming, and conducts in vitro dissolution pH curve analysis with biocorrelated stirring rate and retention time. Can be used for release rate testing of floating agents, microspheres and chewers. Test and transfer various samples with one instrument, saving valuable bench space. Samples can be automatically transferred from one medium to another without operator intervention. RCWF-1 meets the requirements of Reciprocating Cylinder Dissolution Instrument, USP 3 Method and USP 7 Method, EP Conformity Specification.