Electrochemical sensor
View Patent ↗An electrochemical sensor with a capillary channel is formed by placing a sacrificial insert on a sensor base and applying casting material. After the casting material is cured, the sacrificial is removed leaving a capillary channel in the sensor. The insert may be removed by a tool including a clamp for clamping and holding the insert stationary and a sliding block to which the sensor is secured.
1. An electrochemical sensor, comprising:
a sensor base including a screen-printed active area with at least one electrode;
a sacrificial insert on said sensor base; and
casting material on said sensor base and over said sacrificial insert, said casting material of a formulation which allows for mechanical removal of said sacrificial insert from said casting material and said sensor base leaving a capillary channel in said casting material,
wherein said sacrificial insert is adapted to he mechanically removed to form the capillary channel.
2. The electrochemical sensor of claim 1 wherein the at least one electrode is a plurality of electrodes and wherein the plurality of electrodes is in said capilary channel.
3. The electrochemical sensor of claim 1 further comprising a reagent in said capillary channel.
4. The electrochemical sensor of claim 1 wherein said capillary channel has a height of about 0.005 inch.