Digital Conductivity Meters, are traditionally used for water and waste-water testing applications. Also referred to as a TDS Meter, but there are some important differences. In reference to EC and TDS. EC refers to the electrical charge of a given water sample or the measurement of dissolved material in a solution. TDS refers to the total amount of substance. It is often useful to characterize an environment, such as a body of water, by measuring its pH and electrical conductivity (EC). pH is a measure of the acidity.
Potassium Chloride is the international standard to calibrate instruments that measure conductivity. Sodium Chloride is used in water where the predominate ions are NaCl, or whose properties are similar to NaCl, such as seawater and brackish water. The meter is designed to test for the above in regulated environments.
5 point calibration for pH and conductivity ensures accuracy even at extremes of concentration. The meter will also test for and display: conductivity, resistivity and salinity. All to ensure that the water you and I drink or swim in, is as pure as reasonably possible.
Aside from water testing, the Digital Conductivity Meter is used for soil samples and the measurement of fertilizers. Monitoring the changes in the nutrient solution over time will indicate what adjustments should be made to keep the solution in balance for the crop being grown. The results to be determined are: dissolved solids, electrical conductivity, concentration of each essential element and stage of plant growth under similar light conditions. StephenG