The purification workbench is a widely used equipment used by microbiology testing laboratories, and monitoring procedures and instructions should be established. I. Purification Workbench Monitoring Procedures: The purification workbench should be developed with corresponding monitoring procedures. The main contents are: 1 Regularly monitor the microbiological quality of the internal surface of the purification workbench and the sterile isolation system and its internal air quality. (Particle and Microorganism) Purification Workbench The high-efficiency filter used should ensure that the rejection of particles larger than or equal to 0.3um is 99.97% or more. The flow rate of the laminar air from the clean bench should be sufficient to carry the particles out of the work area. In general, the ideal laminar flow velocity of the purification bench should be controlled between 0.36 and 0.54 m/s on a plane (working area) 15-30 cm downstream from the filter; 2 the integrity and layer of the high efficiency filter The flow rate shall be verified and the clean bench shall be tested for integrity (leakage) and filtration efficiency (performance) at the site of use after installation. Such tests must be carried out regularly (usually less than once every six months); 3 once the daily management is found to be unstable, or the environmental monitoring results are abnormal, the deviation of the purification workbench or microbiological test results is on the rise. Integrity check and performance test. This type of inspection is very important, and the clean bench can effectively avoid the potential contamination risks associated with aseptic operations. During aseptic work, the air in the operating area and the microbiological quality of the surface of the console should be monitored at the same time. In the experiment, a positive positive control test should be performed at the same time. Second, the purification workbench use guide: The main contents of the laminar flow purification workbench guide: there should be relatively little movement of people, and the laminar flow purification workbench is placed far away from the door, the purpose is to make the environment around the equipment The airflow is relatively stable and does not affect the operating area. The cleaning workbench must not interfere with the operating area. After the equipment is turned on, the operator of the purification workbench should first check whether the reading of the differential pressure indicator is normal. Compared with the conventional pressure difference, the pressure difference is small or too large, indicating that the equipment is operating abnormally. It is necessary to investigate immediately and take necessary corrective measures. . If the UV lamp is installed in the operation area of ​​the purification workbench, the UV lamp must be turned off before the operation to complete all the aseptic operations. Prevent UV damage to the operator and damage to microorganisms that may be present in the sample. The clean bench operator can operate in the laminar flow zone after wearing sterile latex gloves and a sterile cuff. After opening the workbench, the surface should be disinfected with a sterile disinfectant. After waiting for 5 minutes, the workbench can be cleaned. All items placed in the clean bench should be thoroughly sterilized and air dried prior to aseptic processing. All items in the work area should be tidy so as not to interfere with the direction of the airflow. The idle items in the purification workbench should be evacuated immediately and the airflow should not be blocked. Third, the installation and use of the purification workbench a, purification workbench installation and use The location of the purification workbench should be in a clean room (zui is placed in the initial clean room of 10um or 300,000 class), plug in the power, and press the function shown on the control panel to open it. Before starting the machine, the work area and the outer casing of the purification workbench should be carefully cleaned to remove the surface dust. After 10 minutes from the start, the normal operation can be carried out. b, purification workbench maintenance 1. According to the actual situation, the primary filter should be removed and cleaned regularly, and the cleaning stage cleaning cycle is generally 3-6 months. (If it is not cleaned for a long time, the dust will affect the insufficient air volume to reduce the cleaning effect). 2. When the ideal cross-section wind speed cannot be achieved after normal replacement or cleaning of the primary air filter, the working voltage of the fan should be adjusted (rotation knob) to purify the working surface from the surface to achieve the desired uniform wind speed (new workbench) When using, adjust the knob from left to right, slowly from low speed to high speed, the new workbench should not adjust the high wind speed. 3. Generally, after 18 months of use, when the working voltage of the fan is adjusted to the high point of the Zui, the cleaning table still cannot reach the ideal wind speed, indicating that the high efficiency air filter has excessive dust accumulation (the filter hole on the filter material has been basically blocked). , to be updated in a timely manner), the general efficient air filter is used for 18 months. 4. When changing the high-efficiency air filter, pay attention to the correct size and size (original manufacturer configuration), press the arrow wind direction device, clean the workbench and pay attention to the perimeter seal of the filter, no leakage occurs. Purification Workbench : A self-control work unit for flow clean models for horizontal or vertical sheets. The clean bench can be placed in a clean room to create an extremely clean working environment, or for small units that do not require all cleanliness. Provide a clean, independent environment. Fourth, purification workbench features: (1) The hardened and corrosion-resistant plated steel structure of the cleaning workbench, wear-resistant, high temperature resistant, dustproof (2) Permanently lubricated direct drive central fan with speed controller (low vibration) (3) Purification workbench High-quality filter can provide protection for products (filtering effect is 99.999%, 0.3 microns or more) (4) Ultra-low noise level (less than 59dBA) (5) Long-lasting and easy-to-clean stainless steel top layer (6) Purification workbench can choose auditory and visual low airflow environment alarm (7) Fluorescent lamps are installed outside the work space, purifying the workbench to reduce air flow and easy to replace (8) Special leak-proof cleaning design to eliminate air dead angle and external leakage around the filter due to aging of the sealing device (9) Clean bench work area cleanliness level is 100 (US Federal Standard 209E) Detailed standard operating procedures should be established for the operation, cleaning and disinfection, calibration and maintenance of various indoor laminar flow tables. The purification workbench is equipped with a usage and maintenance record for each laminar flow table and HTY aseptic isolation system. The contents of the use record include: the date and time of cleaning the workbench , the status before and after the use of the instrument, the cleaning or disinfection status and the signature of the user; the maintenance work record of the clean bench includes: fault description, maintenance status and maintenance personnel and equipment responsibility People's signatures, etc. A retrospective review of the cleaning or disinfection records and environmental monitoring records of the clean bench is performed periodically to assess the maintenance of the work area within the laminar flow table. Shanghai Sujing Industrial Co., Ltd. Panoramic Camera,Degree Camera,Action Panoramic Camera,Sports Action Panoramic Camera Shenzhen Zuomi Technology Co., Ltd. , https://www.bkvis.com
　　
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