... DO and foam probe ports4 feeding ports and 2 general purpose portsVesselSingle wall bottom heatingAerationFlow rate0~5 LPMSpargerRemovable ring spargerInlet ... recorderpH controllerProbeMettle-Toledo pH: 2.0~12.0Calibration method(4,7), (4,7,10), (7,10) and manual adjustMeasuringpH 0 ... (pH, DO, anti-foam, Thermo well, Inoculation, Sampling 4 point feeding ports)Ports Cap, Blade, Foam Breaker, Pyrex ...