Oakton ECTestr

The ECTestr is a waterproof, portable conductivity and total dissolved solids (TDS) tester that has automatic temperature compensation, three-point manual or automatic calibration, and a dual-line LCD screen with indicators and error messages. The waterproof, dustproof housing meets IP67 ratings. This TDS tester can be used for a variety of applications including reverse osmosis systems, hydroponics, natural water, distilled water, tap water, wastewater, cooling tower water, boiler condensate, ponds, recirculating systems, pools, and spas.

Conductivity meters, also known as electrical conductivity (EC) meters, measure the ability of a solution or material to conduct an electrical current. This measurement helps determine if the solution is, for example, contaminated or contains too much saline. In general, pure solutions, such as distilled water, have low conductivity. More saline- or nutrient-rich solutions, such as seawater or fertilizers, have high conductivity. Conductivity measurements are often used with total dissolved solids (TDS) measurements, which are typically expressed in ppm (parts per million). TDS consist of dissolved minerals and salts. To determine the amount of TDS, conductivity is measured, and the result is converted to a TDS measurement. Different meters provide results for conductivity, TDS, or both, and the application determines meter selection. Conductivity meters are used in research laboratories and a variety of industries, such as water-quality testing, waste-water treatment, hydroponics, agriculture, aquaculture, and cosmetics manufacturing.

Oakton Instruments manufactures scientific instruments for research, industrial, and educational uses. The company, founded in 1991 and headquartered in Vernon Hills, IL, specializes in meters, electrodes, and transmitters.