Viewing cabinets provide a darkroom environment for viewing materials. The comfortable soft rubber viewport utilizes a contrast control viewing filter to protect the eyes from harmful shortwave radiation and block the "blue haze" associated with longwave UV. Viewport has adequate space for eyeglasses. A lightweight access curtain allows for easy entry and blocks out external light. Bottom panel is removable, allowing the cabinet to be placed over larger mineral samples or bulky items for fluorescence inspection. Lamp is not guaranteed.