Jul 12, 2016
The ESCO biosafety cabinet has an ergonomic tilt design that reduces the glare of the glass surface and improves the operator's operational comfort. The transfer window assembled on the side of the main operating room has a double door interlock function, and the items required for the experiment pass. The transfer window enters the safety cabinet operating room area to ensure that the laboratory operation process does not pollute the laboratory environment. The stainless steel countertop is durable, corrosion-resistant and easy to clean. The built-in mild white, electromagnetic ballastless flicker-free fluorescent lamp provides the best illumination for the entire operating room area. The ESCO Biosafety Cabinet reduces operator visual fatigue, UV-resistant tempered glass windows and a 100% zero-leak design with built-in stainless steel glove ports.
The ESCO Biosafety Cabinet provides both sample and staff protection. The filtered clean air stream is blown from the top of the safety cabinet and passed through the work area and captured before the worker's breathing zone. The airflow will be filtered before it is vented. Normally the filtered air will be discharged back to the laboratory or discharged outside through the exhaust duct.
The secondary ESCO biosafety cabinet is currently the most widely used cabinet type. According to NSF49, the secondary ESCO biosafety cabinet can be divided into four different models according to the inlet airflow speed, exhaust mode and circulation mode: A1 type, A2 (formerly B3) type, B1 and B2 type. All secondary ESCO biosafety cabinets provide protection for workers, the environment and samples.
The minimum airflow velocity or average value of the front window of the A1 safety cabinet should be at least 0.38m/s. 70% of the gas is recirculated through the HEPA filter to the work area and 30% of the gas is filtered through the vent.
The minimum airflow velocity or average of the front window of the A2 safety cabinet should be at least 0.5m/s. 70% of the gas is recirculated through the HEPA filter to the work area and 30% of the gas is filtered through the vent.
The secondary B-type ESCO biosafety cabinets are safety cabinets connected to the exhaust system. The fan connected to the exhaust duct of the safety cabinet is connected to the emergency supply power source, and the purpose is to maintain the negative pressure of the safety cabinet under the power failure to prevent dangerous gas leakage such as laboratory. The minimum amount of front airflow or the average of the measurements should be at least 0.5m/s (100fpm). The B1 type 70% gas is removed through the vent HEPA filter and 30% of the gas is recirculated through the supply port HEPA filter to the work area. The B2 is a 100% full-row safety cabinet with no internal circulation airflow and provides both biochemical and chemical safety controls.
The three-level ESCO biosafety cabinet is designed for level 4 laboratory biosafety. The cabinet is completely airtight. The staff is operated by gloves attached to the cabinet. It is commonly called the glove box and the test product passes through the double door. The transfer box enters and exits the safety cabinet to ensure it is free from contamination and is suitable for high-risk biological testing.
In view of the dangerous use environment of the ESCO biosafety cabinet, the performance of each ESCO biosafety cabinet should be tested by the professional of the National Air Conditioning Quality Supervision and Inspection Center at the time of installation and at regular intervals. To ensure that it meets national and international performance standards to ensure the safety of users. ESCO biosafety cabinet testing mainly includes two aspects of physical detection and biological detection. According to the nature of detection, it can be divided into first detection and subsequent detection. In addition to the annual routine testing of the ESCO Biosafety Cabinet, in one of the following cases, such as after installation, after moving, after maintenance, after replacing the filter, the on-site ESCO biosafety cabinet must also be tested.
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