Main technical parameters and models of biosafety cabinet: bsc-3fa2 I. technical parameters 1. Basic parameters of biosafety cabinet: (1) classification: A2 type, 30% discharge, 70% circulation (2) external dimension ≥ (L) × D × H）1100mm × 750mm × 2250mm；*（ 3) Internal dimension ≥ (L) × D × H）940mm × 600mm × 660mm。*（ 4) Height of table top from the ground: 750mm (size can be customized and modified according to requirements) (5) wind speed: average falling wind speed: 0.33 ± 0.025m/s; Average inlet wind speed 0.53 ± 0.025m/s (6) total system exhaust air volume: 360m3 / h (7) rated power: 1100W (including socket load of 500W in operation area) (8) noise level: ≤ 65dB (a) (9) lighting: ≥ 1000lx * (10) filter efficiency: HEPA (ULPA) high efficiency filter made of borosilicate glass fiber of world-famous brand is adopted for air supply and exhaust filters, which is 0.3 μ M (0.12) particle filtration efficiency ≥ 99.995% (99.9995%) (11) Registration Certificate No.: gxzz 20163540412 (12) weight: gross weight 243kg net weight 227kg (13) number of users: single person 2. Biosafety: * (1) personnel safety: tested by potassium iodide (KI) method, and the protection factor of front window operation port shall not be less than 1 × 105 (2) product safety: colony count ≤ 5cfu / time (3) cross contamination safety: colony count ≤ 2cfu / time II. Structural and functional features: * 1. The cabinet adopts a 10 ° tilt angle design, which conforms to the principle of ergonomics, has a larger perspective, convenient operation and more humanized; 2. The three side wall panels in the exposed working area of the safety cabinet adopt high-quality 304# stainless steel integrated structure, and the internal cleanable parts are treated with 8mm large rounded corners, leaving no dead corners and easy to clean; 3. The working area is surrounded by negative pressure on four sides (left and right sides, rear and bottom), which is better and safer; 4. The worktable is made of high-quality 304# stainless steel and adopts basin design. Even if there is waste liquid overflow in the experiment, it will not flow into the effusion tank for easy cleaning* 5. Fuma caster design: the caster and support are integrated, so that the safety cabinet can move safely through the caster, and can also be fixed and leveled by adjusting the caster feet* 6. The cabinet and support can be separated, and the support height can be customized and modified according to the actual situation; 7. Reasonable structural design: the maintenance and replacement of the safety cabinet filter and fan can be carried out in the front of the safety cabinet, which is more convenient and fast* 8. The front window glass adopts double-layer laminated explosion-proof safety glass; Even if the glass is broken, it will not hurt people, and the biosafety cabinet can work normally until the end of the experiment, which better protects the safety of personnel and experiment* 9. The high brightness LCD display screen can dynamically display the descending air flow rate and inflow air flow rate in the operation area in real time, display the overall operation time of the safety cabinet, the operation time of the UV lamp, the temperature and humidity in the operation area, the resistance of the air supply and exhaust filter, display the service time of the filter, and display the service life of the filter by the bar code. When all the bar codes are lit, the service life of the filter expires, All operating states are displayed at a glance* 10. Electrically control the front window glass door, which can be controlled by foot, key or remote control at the same time. When the glass door rises and falls to a safe operation height, it will automatically stop rising and falling, making the operation more convenient; And the glass door does not need to directly contact the glass when lifting, so that the experimenters are safer; 11. Remote control: all key operations of the safety cabinet can be realized through remote control, making the use of the safety cabinet faster and more convenient; Moreover, the use of the remote controller greatly reduces the direct contact between the user and the safety cabinet, and further protects the personal safety of the user; 12. With reservation timing function, it can automatically set the timing startup, shutdown and ultraviolet lamp disinfection time of the safety cabinet, which greatly saves the working time and improves the working efficiency; 13. Strict air tightness test: pressurize 500pa in the safety cabinet, and the air pressure shall not be lower than 450pa after 30min. 14. Air flow partition design of front window: it prevents air flow from leaking through the side wall and upper side of front window, making the test safer; 15. Excellent selection of fan: when the safety cabinet is in normal operation without adjusting the speed control of the motor, and the air pressure through the filter decreases by 50%, the exhaust volume of the fan decreases by no more than 10%. 16. Perfect alarm system: (1) alarm when the glass door is not at the safe height: the safe height of the glass door is 200mm. When the front side of the safety cabinet is higher or lower than the safe height, The safety cabinet will give audible and visual alarm（ 2) Ultra high filter pressure alarm: when the resistance of the filter becomes large, the safety cabinet will give an audible and visual alarm (3) filter failure replacement alarm: when the service life of the filter expires, there will be an audible and visual alarm for filter replacement（ 4) Air flow fluctuation alarm: when the air flow fluctuation of the safety cabinet exceeds 20% of the nominal value, it will give an audible and visual alarm. 17. Safe interlock protection design: interlock protection is set for misoperation, which will not cause injury even if misoperation. (1) interlock between the fan of the safety cabinet and the glass door: when the glass door of the safety cabinet falls to the bottom, the fan of the safety cabinet will close automatically, The change protects the use of the safety cabinet and increases the service life of the safety cabinet (2) the UV lamp is interlocked with the glass door, fan and lamp of the safety cabinet: the UV lamp can be turned on only when the glass falls to the bottom and the lamp is not turned on, so as to prevent the misoperation of the UV lamp from harming the human body and protect the safety of personnel; Fqj, read the full text
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