The Bioviewer, made from tough, almost unbreakable plastic to give years of use in classroom conditions. Designed specifically with magnification set and ready to view microscope images on a film slide. (See Biosets). A white reflector stage provides sufficient light for a bright image. No need for a microscope lamp so use at any time, in any room even outdoors. Inevitably, It isn’t necessary to leave expensive microscopes in inexperienced hands.