The DM4000 B LED is a microscope system with LED illumination suited for biomedical applications. The LED-transmitted light illumination is integrated in the microscope automation, covering a range of microscopy applications. LED illumination produces constant color temperature at all intensity levels without heat buildup, enabling stable results. High-luminance and good color reproduction provide images with a clear differentiation of the colors in the sample. With at least 50,000 hours lifetime, frequent bulb changes are not necessary.