Patent ID: 7779677

Claim:
An apparatus for liquid chromatography, wherein the apparatus is equipped with an electrolytic device in a passage of eluate from a separation column, characterized in that the electrolytic device comprises a working electrode which is formed an electrically conductive diamond film on at least one side surface of a electrically conductive plate, a spacer plate of electrical insulating material which is 0.05 to 0.5 mm in thickness and has a hole, and a counter electrode which is facing to the diamond-formed surface of the working electrode while the spacer plate is placed between the working electrode and the counter electrode; that the electrolytic device has an eluate inlet hole, an eluate outlet hole and a reference electrode, which are opened to a cavity formed by the hole of the spacer plate; that the eluate in the electrolytic device is pressurized to 1.0 to 15.0 kg/cm 2 ; and that a measuring device, which measures electrolysis current while electrolyzing by applying a constant voltage to the working electrode, is connected to the electrolytic device.