Essential for GMP - Negative Pressure Weighing Room

Negative pressure weighing chamber is a very common local purification equipment, which has been widely used in places such as pharmaceuticals and microbiology research. The weighing room is mainly used for the proportioning and weighing of drugs, as well as for the weighing and packaging of dust and reagents. It can control the overflow and upward movement of dust and reagents, prevent the inhalation hazards of dust and reagents to the human body, and also avoid cross contamination of dust and reagents, protecting the external environment and the safety of indoor personnel.
The main equipment of the negative pressure weighing room is assembled from several parts, including the working area, return air box, fan box, outlet air box, and outer box. The control panel can be used to control the start and stop of the fan, and adjust the required wind speed during operation. It should be noted that after the installation of the equipment is completed, specialized personnel need to adjust it. After setting the information of the equipment, it can work autonomously according to its intelligent operating system, which will have a very good protective effect on our daily work and provide a great guarantee for the physical health of our staff.
As for its working principle, it is actually not complicated. By providing a unidirectional vertical airflow, a portion of the clean air is circulated in the work area, while the remaining portion is discharged to nearby areas. The exchange of airflow creates atmospheric negative pressure, ensuring a high level of cleanliness in the work area and preventing cross contamination. Because the negative pressure weighing chamber can not only prevent the overflow of dust and reagents, but also prevent harmful gases from harming our bodies, it can be said that the protective effect of the negative pressure weighing chamber is still very significant.
The specific working principle is as follows:
This device adopts a vertical unidirectional airflow form. The return air needs to be pre filtered through a primary filter to remove large dust particles in the airflow. After pre-treatment, the air is further filtered through a medium efficiency filter to fully protect the high-efficiency filter. Under the pressure provided by the centrifugal fan, it is filtered through a high-efficiency filter to meet the cleanliness requirements. The clean airflow is sent into the air supply box, with 90% passing through the uniform flow air mesh plate to form a uniform vertical air supply airflow, and 10% passing through the air volume adjustment plate to be discharged from the equipment. All airflows are processed by high-efficiency filters, so there is no residual dust in the air supply and exhaust, avoiding secondary pollution. Due to the formation of a stable unidirectional flow in the work area, the dust emitted in this area will be captured by the primary and medium efficiency filters under the influence of the unidirectional airflow. The equipment is equipped with a 10% exhaust system, which creates a negative pressure relative to the external environment, ensuring to some extent that dust in this area will not spread outside and protect the external environment.