referring now to fig1 a a titration test may require the use of a third pump 60 coupled to a cell 62 via a suitable line 63 to inject a second fluid 64 into the fluid sample the second fluid can be an oil a gas a formation fluid a wellbore fluid such as drilling fluid a reagent or some other fluid during fluid compatibility or titration testing two or more fluids are blended together to form a resultant fluid before passing through the view cell 11 the controller 9 can be programmed to control the pumps 5 9 and 60 to provide the desired flow rate pressure temperature and other parameters for performing a titration testing also for filtration testing a filter element 70 can be positioned along a flow line 72 connected to the fluid conduit 10 the flow line 72 can include suitable flow control devices 76 to selectively control flow through the flow line 72 as the fluid sample is discharged from the fluid conduit 10 the filter element 70 captures particulate in the out flowing fluid using parameters such as the volume of flow through the filter and the weight of the captured particulate characteristics such as asphaltine content can be determined still other tests that can be performed using embodiments and teachings of the present invention include isothermal depressurization experiments reversibility experiments and hysteresis experiments the details of the above described tests and analyses are known.