Application scope: The purification bench is one of the essential basic equipment for the research and experiment of biological technology, which is widely used in such industries as biological pharmacy, biochemistry, environmental monitoring and electronic instrument and instrument, providing local purification working environment. Product features: The shell is made of high quality cold rolled steel plate, electrostatic spraying, and the operating table is made of SUS304 brushed stainless steel, which is corrosion-resistant and easy to clean. The machine adopts centrifugal fan with stable speed and low noise. Liquid crystal display control system, with light touch micro switch, six-section wind speed control; Equipped with independent control of sterilization lamp and floodlight, sterilization device has timing function (0-999min); Vertical quasi-closed mesa, the operation room drop down air curtain formation, can effectively prevent external gas penetration and operation area clean; The use of counterbalance structure allows the operation window to be positioned arbitrarily within the specified range; It is equipped with HEPA air filter with pre-filter as medium efficiency filtration system, which can effectively extend the service life of high efficiency filter. Technical parameters: Model: VS - 840-1 Display mode: LCD Air flow: vertical flow Working face: one Clean isopolar: level 100 (filtering efficiency of 0.5 or more m is 99.99%) Working area wind speed range: 0.3-0.6m/s (adjustable) Noise: 67 db or less Vibration half-peak value: Illumination: p 300 lx Working area size (mm) : 830 x 650 x 520 Appearance size (mm) : 990 x 700 x 1650 Specification and quantity of high efficiency filters (mm) : 780 x 565 x 50 x Max Specification and quantity of fluorescent lamp/uv lamp: 20W x elite /20W x elite Weight (kg) : 115 Power (kw) : 0.15 Power supply: AC220 + / 10V 50/60hz