once the failure has been corrected switch 100 can be depressed to continue compounding operations further in the event of a sensed failure and shutdown the information entered for volume and specific gravity will be remembered as well as the stage of the operation so as to continue forth from the point of the detected failure the control panel 60 is also equipped with a power indicator lamp 109 to indicate that power is supplied to the unit the controller 26 also includes internal electrical checks to monitor various electrical components as well as the amount per unit time functions of the device in the event of a malfunction of one of these conditions the compounder will cease operations and device alarm light 96 will be illuminated these operating functions have been selected to be non fixable by the operator and therefore the compounder will not allow a restart until properly serviced fig3 depicts in block form how volume and failures of predetermined operating conditions are sensed and interpreted the controller 26 receives information from load cell 28 and directs electrical current through electrical connector 110 fig1 to drive the pumps 20 22 and 24 after the desired volume and specific gravity information has been entered and registered switch 100 is depressed to start the compounding operation in operation the controller 26 activates the pump 20 which continues pumping until the weight sensed by load cell 28 of the container 18 corresponds to the amount registered in the controller 26 an analog to digital converter 112 converts the analog signal of the load cell 28 to a digital signal readable by the controller 26 the controller 26 then converts.