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Necessary for passing GMP - negative pressure weighing room
Necessary for passing GMP - negative pressure weighing roomThe negative pressure weighing room is very common local purification equipment and has been widely used in pharmaceutical and microbial research and other places. The weighing room is mainly used for the proportioning and weighing of medicines, and for weighing and packaging of dust and reagents. It can control the spillage and rise of dust and reagents, prevent the inhalation harm of dust and reagents to the human body, and avoid cross-contamination of dust and reagents. , protect the safety of the external environment and indoor personnel.The main equipment of the negative pressure weighing room is assembled from the work area, return air box, fan box, air outlet box, and outer box. The start and stop of the fan can be controlled through the control panel. The wind speed required for work can be adjusted. It should be noted that after the equipment is installed, specialized staff are required to adjust it. After the equipment information is set, independent operation can be performed based on the intelligent operating system inside it. work, this will have a very good protective effect on our daily work, and also provide a great guarantee for the health of our staff. Its working principle is not complicated. That is, by providing a unidirectional vertical airflow, a part of the clean air circulates in the work area, and the remaining part is discharged to nearby areas. The exchange of airflow generates atmospheric negative pressure, thus ensuring a high degree of cleanliness in the work area and preventing Cross-contamination. Because the negative pressure weighing room can not only prevent the spillage of dust and reagents but also prevent some harmful gases from harming our bodies, it can be said that the protective effect of the negative pressure weighing room is still very large. The specific working principle is as follows: This equipment adopts the form of vertical one-way airflow. The return air must first be pre-filtered through the primary filter to remove large dust particles in the airflow. The pre-treated air is then passed through the secondary filter. The high-efficiency filter performs secondary filtration to fully protect the high-efficiency filter. Under the pressure provided by the centrifugal fan, it passes through the high-efficiency filter to meet the cleanliness requirements. The clean airflow is sent to the air supply box, 90% passes through the uniform air supply screen to form a uniform vertical air supply airflow, and 10% passes through the air volume adjustment plate and is discharged from the equipment. All air flows are processed by high-efficiency filters, so there is no residual dust in the supply air and exhaust air, avoiding secondary pollution. Due to the formation of a stable one-way flow in the working area, the dust emitted in this area will be captured by the primary and medium-efficiency filters along with the airflow under the influence of the one-way airflow. The equipment has 10% exhaust air, thus forming a negative pressure relative to the external environment, which to a certain extent ensures that dust in this area will not spread to the outdoors, thus protecting the external environment. EU GMP guidelines require: The weighing of starting materials usually needs to be carried out in an isolated and purpose-designed weighing room. The Chinese Pharmaceutical GMP Guidelines believe that it is recommended to operate in an area equipped with a dust removal system to minimize the operator's exposure to the product. It can be seen from the requirements for weighing raw and auxiliary materials that a special weighing room is required for weighing raw and auxiliary materials, and measures to maintain relative negative pressure or special isolation and dust removal systems are required.Necessary for passing GMP - negative pressure weighing room The negative pressure weighing room is very common local purification equipment and has been widely used in pharmaceutical and microbial research and other places. The weighing room is mainly used for the proportioning and weighing of medicines, and for weighing and packaging of dust and reagents. It can control the spillage and rise of dust and reagents, prevent the inhalation harm of dust and reagents to the human body, and avoid cross-contamination of dust and reagents. , protect the safety of the external environment and indoor personnel. The main equipment of the negative pressure weighing room is assembled from the work area, return air box, fan box, air outlet box, and outer box. The start and stop of the fan can be controlled through the control panel. The wind speed required for work can be adjusted. It should be noted that after the equipment is installed, specialized staff are required to adjust it. After the equipment information is set, independent operation can be performed based on the intelligent operating system inside it. work, this will have a very good protective effect on our daily work, and also provide a great guarantee for the health of our staff. Its working principle is not complicated. That is, by providing a unidirectional vertical airflow, a part of the clean air circulates in the work area, and the remaining part is discharged to nearby areas. The exchange of airflow generates atmospheric negative pressure, thus ensuring a high degree of cleanliness in the work area and preventing Cross-contamination. Because the negative pressure weighing room can not only prevent the spillage of dust and reagents but also prevent some harmful gases from harming our bodies, it can be said that the protective effect of the negative pressure weighing room is still very large. The specific working principle is as follows: This equipment adopts the form of vertical one-way airflow. The return air must first be pre-filtered through the primary filter to remove large dust particles in the airflow. The pre-treated air is then passed through the secondary filter. The high-efficiency filter performs secondary filtration to fully protect the high-efficiency filter. Under the pressure provided by the centrifugal fan, it passes through the high-efficiency filter to meet the cleanliness requirements. The clean airflow is sent to the air supply box, 90% passes through the uniform air supply screen to form a uniform vertical air supply airflow, and 10% passes through the air volume adjustment plate and is discharged from the equipment. All air flows are processed by high-efficiency filters, so there is no residual dust in the supply air and exhaust air, avoiding secondary pollution. Due to the formation of a stable one-way flow in the working area, the dust emitted in this area will be captured by the primary and medium-efficiency filters along with the airflow under the influence of the one-way airflow. The equipment has 10% exhaust air, thus forming a negative pressure relative to the external environment, which to a certain extent ensures that dust in this area will not spread to the outdoors, thus protecting the external environment. EU GMP guidelines require: The weighing of starting materials usually needs to be carried out in an isolated and purpose-designed weighing room. The Chinese Pharmaceutical GMP Guidelines believe that it is recommended to operate in an area equipped with a dust removal system to minimize the operator's exposure to the product. It can be seen from the requirements for weighing raw and auxiliary materials that a special weighing room is required for weighing raw and auxiliary materials, and measures to maintain relative negative pressure or special isolation and dust removal systems are required. |
