B&c, italy supplies a series of electrochemical controllers. Among various electrochemical controllers, ph565.2 ph controller contains all the benefits of modern and reliable ph measurement and regulation for use in industrial plants, and is particularly used in fermentation process. The input is supplied from ph electrode and micro transmitter. This electrochemical controller has two set points and output 0-20 or 4-20 ma. The mv 545.2 orp variant of b&c electrochemical controller receives input from probe or micro transmitter. The c565.2 conductivity controller attempts measurement in ultra pure water and in solutions containing very high ionic contents. This c565.2 version of b&c electrochemical controller includes a scale selector and there are two independent and displayable on-off regulators with possibility of selecting min/max function and insert delay function for each set point. The od 565.2 dissolved oxygen controller accepts input either from polarigraph cell or from micro transmitter. This model of b&c electrochemical controller possesses automated temperature compensation. The cd 565.2 dissolved co2 controller is ideal for fermentation process. Combined with co2 sensor this controller offers a digital readout of co2 concentration in aqueous solution. This model of b&c electrochemical controller has 3 1/2 digit readout and two set points with zero and slope correction available on front panel. Another version of b&c electrochemical controller is af 511.2 antifoam indicator, which is ideal for use in fermentation plants as it measures the conductivity of foam and the measurement value is displayed through led bar graph. All these models of b&c electrochemical controller are available in din mounting, rail mounting, transmitters, etc.