The multiparameter water quality meter can measure thirteen parameters: pH, ORP, temperature, dissolved oxygen, conductivity, total dissolved solids (TDS), salinity, resistivity, specific conductance, ammonium, nitrate, chloride, and barometric pressure. Featuring a powerful sensor probe and state-of-the-art functions, the multiparameter water quality meter makes it easy to get highly reliable water quality data simply and quickly just by submersing the sensor in the water. The multiparameter water quality meter's display case has a waterproof design that allows you to work without concern of splashing or accidentally dropping the instrument in the water. The multiparemeter water quality meter is flexible enough to use for checking the quality of a broad range of water samples, from factory effluent to urban drainage, river water, lake and marsh water, aquatic culture tanks, agricultural water supplies, and sea water. The multiparameter water quality meter's rugged four port Quatro cable and sensor housing allows you to choose up to three sensors from the eight available, giving you access to recording thirteen different parameter measurements. Sensors available for the four port Quatro cable assembly include Galvanic DO, Polarographic DO, and any two ISEs among pH, ORP, pH/ORP combination, ammonium, chloride, or nitrate creating an extremely powerful handheld multiparameter water quality meter. NOTE: A temperature/conductivity sensor is built into each multiparameter water quality meter sensor assembly. Cable options for the multiparameter water quality sensor range from 1, 4, 10, 20, and 30-meter choices. Cable lengths of 4 meters or greater include a convenient cable management kit to keep everything simple and organized. Multiparameter water quality sensor cables are easily swapped to allow for different measurement conditions.