Voltammetric method and apparatus

Arrangement of indicator electrodes designed and adapted as indicator electrodes for a device for voltammetry comprising

• a vessel with an area intended for accommodating a liquid to be analyzed,
• a reference electrode arranged in the area intended for the liquid,
• a measuring device connected to the electrode,
• a carrier for a plurality of said indicator electrodes, outside of the vessel and for bringing at least on selected indicator electrode into the area of the vessel intended for the liquid in order to contact the liquid,
• a movement drive coupled to a sequence controller for controlling the movement of the carrier and
• means for connecting the selected indicator electrode in the area of the vessel intended for the liquid with the electrical measuring device.

Tape cassette for a device comprising a cassette housing containing a feed spool (23) and a take-up spool (24), a supply of carrier tape with a plurality of electrodes wound onto the feed spool (23) and the end of this supply winding being connected to the take-up spool so that the tape, through rotation of the take-up spool, can be wound off the feed spool, the carrier tape being desired and adapted as a carrier for a device for voltammetry comprising

• a vessel (1) with an area intended for accommodating a liquid (2) to be analyzed, a reference electrode (8) arranged in said vessel in the area intended for the liquid,
• a measuring device (20) connected to the electrode,
• said carrier being adapted for mounting a plurality of indicator electrodes (6) outside of the vessel and for bringing at least one said selected indicator electrode into the area of the vessel (1) intended for the liquid in order to contact the liquid, and
• a movement drive coupled to a sequence controller for controlling the movement of the carrier and means for connecting the movement of the carrier and means for connecting the selected indicator electrode in the area of the vessel intended for the liquid with the electrical measuring device.

Method of carrying out a voltammetric analysis comprising steps of

• selecting at least one indicator electrode from a plurality of indicator electrodes (6, 6a) mounted on a carrier,
• bringing said selected electrode into the area of the vessel intended for accommodating a liquid to be analyzed by moving said carrier with a movement drive, and
• automatically replacing said selected indicator electrode with a subsequent indicator electrode arranged on said carrier according to a predetermined sequence,
• wherein the indicator electrode in the area is connected to an electrical measuring device (20).