mounted to the microscope using an extension tube 473023 9900 carl ziess inc and a 1 u00d7 camera coupler hr100 cmt carl ziess inc not shown the images were recorded using a vcr 35 ag 1960 panasonic industrial co secaucus n j and analyzed using a video frame grabber 36 dt2867 data translation marlboro mass and appropriate prepackaged software global lab v2 0 data translation the spatial resolution of the application of the present invention shown in fig2 may be changed by using a microscope objective of a different order of magnification in addition the amount of fluorescein dye added may be varied in order to change the degree of contrast between the dispersed phase and the continuous phase the method of the present invention shown in fig1 may be useful in several different applications this technique may be used in gas liquid fluidized bed reactors to characterize gas bubbles dispersed in a continuous liquid phase in addition it may be necessary to add dye to the dispersed phase rather than to the continuous phase for example droplets of one solution dispersed in another solution may be characterized as in coalescence chambers emulsion phase contactors and aerosol and nozzle research furthermore this concept may be used to examine the morphology of mammalian and plant cells bacteria or.