The Dark Reader blue LED Hand Lamp and Spot Lamp are very versatile devices for viewing fluorescent samples around the lab. The lamps are very popular for viewing GFPs in transgenic plants and animals. The Dark Reader Spot Lamp (SL10S) generates a narrower beam about twice as intense as the Hand Lamp and covers an area about 5 cm in diameter – useful for minigels and smaller samples. The remarkable efficiency of the Spot Lamp means that it can be powered by a small battery pack, allowing the lamp to be easily used in remote locations.