WD-9403F is designed to observe and take pictures for fluorescence and colorimetric imaging applications, such as the image for gel electrophoresis and cellulose nitrate membrane. It has a dark chamber, no need darkroom. Its drawer-mode light box makes it convenient for use. It is strong and durable. It is suitable for the research and experimental use of research institutes, colleges and universities and units engaged the research of biological engineering science, agriculture and forestry science, etc.