Patent ID: 7759948

Claim:
A disposable meter for use by a technician or a consumer on location for testing the level of total dissolved solids in a water source, the meter comprising: a body with at least water resistive properties, formed with an open interior; a first indicator; a second indicator; a pair of electrodes comprising a first electrode and a second electrode wherein when the pair of electrodes are immersed in water energization may complete a circuit by passing between the first electrode and the second electrode; and a circuitry disposed within the body, the circuitry connected to the first indicator and the pair of electrodes, the circuitry being configured to: commence energization to pass from the first electrode to the second electrode; measure the conductivity of the water between the pair of electrodes; energize the first indicator if the measured conductivity value exceeds a first predetermined threshold value, the first predetermined threshold value is indicative of a first level of measured total dissolved solids; and energize the second indicator if the measured conductivity value exceeds a second predetermined threshold value, the second predetermined threshold value is indicative of a second level of measured total dissolved solids; wherein the first indicator is a first LED and the second indicator is a second LED, and the circuitry is further configured to control the first LED or the second LED to be pulsingly energized, the pulsing energization of the first LED being indicative of a third threshold level of measured total dissolved solids, and the pulsing energization of the second LED being indicative of a fourth threshold level of measured total dissolved solids.