Patent ID: 8393199

Claim:
A diffusion testing device for determination of transdermal therapeutic preparation determination comprising: a receptor liquid reservoir; a diffusion testing cell having a receptor chamber to be completely full of receptor liquid media, a stirrer being placed within said receptor chamber, a receptor liquid supply unit, a thermostat bath wherein said diffusion testing cell is placed, a stirring apparatus located beneath said thermostat bath to rotate said stirrer, a sampling unit permitting sampling and storage of receptor liquid dissolving permeated drugs, and a receptor liquid outlet disposed at an upper part of the diffusion testing cell; and said receptor liquid reservoir, said receptor chamber, said receptor liquid supply unit, and said sampling unit being connected via an infusion tube; and said thermostat bath comprising a metal block and apertures or through-holes within said metal block for admission of diffusion testing cell, said metal block having a temperature regulation unit installed.