The LAS-4000 is an image analysis system that can detect chemiluminescence, bioluminescence and fluorescence with cooled CCD camera using a 3.2 megapixel super CCD. The exposure time ranges from 1/100 sec to 2 hours. It has a dynamic range of up to four orders of magnitude. It is regularly used to take images of Western blots and SDS PAGE gels and it can also detect GFP and EtBr signal.