Brief Introduction Having a lot of functions, ZF-401 Ultraviolet Examining Appliance is a necessary appliance and photographing equipment in modern experimental rooms. Its biggest feature is photographing through EBB dye to DNA,RNA by transmitting ultraviolet ray. Comparing with lighting ultraviolet light source,it not only greatly shortens the photographing time but could be used in photographing other samples and materials due to the perceptible source on it. Above all, it has numerous functions:photographing and protein (isoenzyme), anti-shooting normal diagrams and materials,further producing slides; photographing with ultraviolet source or perceptible light source;not only be used anti-shooting but also photographing by shining light.