... stage, side-on photomultiplier tubes, borosilicate glass,double-alkali photocathode, 170 ~ 350nm spectral response, using ... : Spectrophotometer, colorimeter, dust meter, light meter, radiation calorimeter,scanning electron microscopy, turbidity meter, particle counter, biochemical analyzer ... , X-ray camera timer, optical density meter, optical properties to identify,replicate equipment. General ...