| System 6 and System 10 
             The BOD Sensor Systems 6 and 10 have been developed by VELP 
            according to international safety rules for workers and environment 
            protection. An innovative, microprocessor controlled, electronic 
            pressure measuring system (without mercury) allows BOD (Biological 
            Oxygen Demand) determinations by manometric technique. The BOD 
            Sensor Systems 6 and 10 are composed by a 6 or a 10 places stirring 
            group with 6 or 10 BOD Sensor units, 6 or 10 alkaly holders for 
            carbon dioxide absorption, and 6 or 10 stirring bars, offering to 
            users a complete equipment, immediately operative, for measuring BOD 
            values within four scales, up to 90, 250, 600, 999 ppm, or to higher 
            values after dilution. The epoxy painted stainless steel 
            structure gives to the equipment a strong resistance to chemical 
            corrosion. The compact design allows the contemporary operation 
            of 6 or 10 BOD bottles in a reduced space. Two side embedded 
            handles allow an easy introduction or removal of the equipment 
            into/from a refrigerated thermostat also with bottles in place. The 
            robustness of the stirring motor assures a continuous operation 
            without risk of stop or overheating which could alter the results of 
            the BOD determination. 
            System 6 
    specifications  |