dispensing booth/sampling booth is a kind of local purification equipment used for pharmaceutical, microbial research and scientific experiments and other places, it provides a vertical one-way air flow, part of the clean air circulation in the working area, part of the discharge to the nearby area, so that the working area produces negative pressure, prevent cross-pollution, to ensure the high cleanliness of the working area environment. The weighing and packing of dust and reagents in the equipment can control...