Mainly used for a variety of low-level radioactive material of total α, total β accurate measurement. For environmental protection, water, air, soil, buildings, radioactive detection; for health and epidemic prevention, drinking water, food, vegetables, milk and dairy products of radioactive detection; for building inspection, on granite stone, marble, gravel, cinder blocks, bricks and other radioactive slag testing; for nuclear power and other nuclear facilities, effluent, atmospheric, environmental monitoring; other can be used for radiation protection, health physics, biomedical research, agriculture, archeology, geology and so on.