... world notes true and false, identify id, the bill is true or false. BLACK LIGHT Detector portable hand-held ... figure 100,50,20,10,5,1 fluorescence, there is a negative reflection of fluorescence; counterfeit money no fluorescence. ... his hands to push the switch for the flashlight TORCH lighting, push the switch to TVBE for the purple ... 5th, in the case of light the dark, that is, replace the battery.