In-Situ Inc have appointed Isodaq Technology as a distributor in the UK and Ireland for their range of Water Quality sensors and Water Level loggers. The range includes the RDO Pro Optical Dissolved Oxygen sensor which requires minimal maintenance because there is no membrane to replace. The RDO Pro is the perfect partner for Isodaq's new Frog RX GSM/GPRS logger either via 4-20mA input or via SDI-12 if the temperature record is also required. Other products include the Troll 9500 multi-parameter sonde and the AquaTroll 100/200 depth, conductivity and temperature loggers, plus a range of LevelTroll loggers ideally suited to monitor borehole pumping tests.