Abstract: A self-cleaning analyzer system for sensing a chemical characteristic of a fluid sample according to one embodiment includes a sensing chamber including a sample inlet configured to receive the fluid sample and a sample outlet; a sensor configured to sense the chemical characteristic of the fluid sample in the sensing chamber; a plurality of cleaning beads contained in the sensing chamber; and an agitator configured to stir the fluid sample in the sensing chamber. One or more of the plurality of cleaning beads contact the sensor when the agitator stirs the fluid sample. A method for sensing a chemical characteristic of a fluid sample using a self-cleaning analyzer system according to one embodiment includes providing the fluid sample to the sensing chamber; sensing the chemical characteristic of the fluid sample; and stirring the fluid sample causing one or more of the plurality of cleaning beads to contact the sensor.