This conductivity/TDS tester is great for a range of applications including, aquaculture, food, vineyard, labs, and water treatment. This 3-in-1 meter tests conductivity, TDS, and temperature easily and accurately. All readings are automatically compensated for temperature variation and the ability to adjust to a custom temperature correction coefficient. This tester also features an adjustable EC to TDS conversion factor making ideal to measure either irrigation water or a nutrient solution. The large multi level LCD displays both EC or TDS and temperature readings simultaneously, while a stability indicator is displayed to alert the user when a stable reading is obtained. The EC59 tester also features a replaceable EC/TDS probe.