The perfect Dissolution Tester for multiple media change is the CALEVA BioDis which complies with USP method 3 and optional method 7.

It is the perfect equipment for multiple pH change due to the 6 rows of vessels, 6 Test Stations and 2 Reference Positions each, located in a thermostatically heated water bath.

For this reason the RRT 9 allows to change the pH up to 6 times automatically. The number of strokes/min. can be preset in a range of 5 - 40.

Media losses by evaporation are prevented by a covering system. Optional a Sampling Station for automation is available.