The HQDBOD system combines the HQ40d Digital Multi-Parameter Meter, the new LBOD101 IntelliCAL Probe, a meter stand, and power and USB cables for laboratory use. The HQ40d Digital Multi-Parameter Meter offers true Plug and Play operation with IntelliCAL pH, conductivity, and dissolved oxygen (LDO) probes. Plug in any two IntelliCAL probes and get simultaneous measurement, simultaneous readout! The LBOD101 Probe is the latest embodiment of Hach's patented Luminescent Dissolved Oxygen (LDO®) technology. The LDO technology is now available with an integrated stirrer for use in BOD5 testing applications. The LBOD101 probe is used for initial and final dissolved oxygen measurements, which leverages the LDO technology to eliminate many BOD testing concerns by providing: