Dissolution Apparatus Calibration

Which method to be followed for Chemical test (like prednisone) to the modified dissolution apparatus USP type-II for calibration?, which have mini paddle and 200 ml mini bowl. Apparatus required for prolong release test of Hormonal intrauterine system.

Consult the Pharmacopoeias

No any information in USP for modified disso. apparatus to perform Chemical calibration.
Please guide.