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Laminar Flow Cabinet Clean Bench, also known as laminar flow Cabinet, can be mainly divided into two- person single, single side double side, horizontal vertical, etc. The structure is divided into the box, table, bracket, support foot, exhaust pipe, HEPA filter, pre-filter, etc.   Laminar flow cabinet design should have sufficient strength and stiffness, the weight should be light under the premise of good stability, the joints should be tight, according to the needs of the support foot can be self-locking structure universal wheel, but for the high requirements of seismic workbench without support feet and universal wheel, the operating area of the working surface can be made independent of the box platform. The inner surface of the single table is made of three sides of the wall. The wall surface is smooth and the joint is sealed. The glass and metal connection parts should also be sealed. The negative pressure air duct should be designed so that the air duct, plenum, filter, and su

  According to the requirements of the Clean Bench industry-standard JG/T292-2010, the Clean Bench is mainly detected by scanning. Specifically, it refers to the poor sealing of the filter and the installation frame due to the leakage holes on the filter material and the frame of the high-efficiency (or ultra-high-efficiency) air filter. Detection of aerosol leakage caused by incorrect installation of filters.   The detection method is to evaluate whether it is leakage according to the ratio of downstream particle concentration to upstream particle concentration (hundred points). When atmospheric dust is used, the number of downstream particles can be evaluated. The concentration should be ≤3 particles /L, and the leakage penetration rate should be ≤0.01% by the DOP method. The workbench used for biological cleaning purposes should also be tested for sedimentation bacteria concentration ≤0.5cfu/(dish.0.5h).   When detecting, use atmospheric dust or multi-dispersed aerosol as the source