Multiparameter Water Quality Meter – measures Conductivity, pH, ORP, Dissolved Oxygen and temperature. A 5 m cable connects the sonde to a Bluetooth communications device. Take readings in the Vu-Situ App on the included tablet or connect to your own device so you can email prepared low flow reports. The sensors are designed for long term use and have excellent stability. The optical Dissolved Oxygen sensor means long term stable operation without recalibration. A flow cell is included for low flow sampling.