The PockeTester pH/Conductivity tracer measures five parameters including conductivity, TDS, salinity, pH and temperature using one electrode. Units of measure are pH, µS, mS, ppm, ppt, mg/L, g/L, °C and °F. Its memory stores up to 25 data sets with adjustable conductivity to TDS ratio. The device features auto power off and low battery indicator and is waterproof to IP67.