A conductivity detector for measuring the conductivity of a fluid comprising: an elongated hollow fluid chamber delineating an interior channel, the hollow chamber including a first end and a second end, the first end being open for receiving a fluid into the interior channel; a first excitation electrode disposed proximate the first end of the hollow chamber and a second excitation electrode disposed proximate the second end of the hollow chamber; a first sense electrode and a second sense electrode, the first and second sense electrodes (514, 516) disposed between the first and second excitation electrodes (510, 512); a power source communicating with the first and second excitation electrodes (510, 512); and a meter communicating with the first and second sense electrodes (514, 516); wherein current from the power source applied to the first and second excitation electrodes (510, 512) induces current in the fluid received in the interior channel by capacitively coupling with the fluid, the induced current sensed by the first and second sense electrodes (514, 516) by capacitively coupling the first and second sense electrodes (514, 516) with the fluid; and wherein the fluid chamber is a disposable component; the first and second excitation electrodes (510, 512) are respective first and second excitation rings having an annular shape, and the first and second sense electrodes (514, 516) are respective first and second sense rings each having an annular shape; and the fluid chamber is slidably received through the annular shaped first and second excitation rings (510, 512) and the annular shaped first and second sense rings (514, 516). an elongated hollow fluid chamber delineating an interior channel, the hollow chamber including a first end and a second end, the first end being open for receiving a fluid into the interior channel; a first excitation electrode disposed proximate the first end of the hollow chamber and a second excitation electrode disposed proximate the second end of the hollow chamber; a first sense electrode and a second sense electrode, the first and second sense electrodes (514, 516) disposed between the first and second excitation electrodes (510, 512); a power source communicating with the first and second excitation electrodes (510, 512); and a meter communicating with the first and second sense electrodes (514, 516); wherein current from the power source applied to the first and second excitation electrodes (510, 512) induces current in the fluid received in the interior channel by capacitively coupling with the fluid, the induced current sensed by the first and second sense electrodes (514, 516) by capacitively coupling the first and second sense electrodes (514, 516) with the fluid; and wherein the fluid chamber is a disposable component; the first and second excitation electrodes (510, 512) are respective first and second excitation rings having an annular shape, and the first and second sense electrodes (514, 516) are respective first and second sense rings each having an annular shape; and the fluid chamber is slidably received through the annular shaped first and second excitation rings (510, 512) and the annular shaped first and second sense rings (514, 516).