The AP-2000 Aquaprobe packages are the smaller of the advanced portable multi-parameter water monitoring probes.The AP-2000 comes pre fitted probes covering pH, ORP, Conductivity, TDS, SSG, Resistivity, Salinity, Dissolved Oxygen and Temperature probes, the AP-2000-D add a depth sensor. Each probe comes with two empty sockets to added an optical, or Ion Selective sensor (ISE). All of the probes are constructed from tough marine grade aluminium that has been hard anodised, making it suitable for ...