There is no basic principles of the return air blast clean room is cleaned air displacement room air laboratory, preparation room purification, there should be a prerequisite for the supply and return air (or exhaust) of the channel, and the air and wind back to the wind in order to achieve the same amount of wind balance. Cleanroom construction, there will be individual rooms have air, no return (row) wind conditions, especially some auxiliary engine room, such as the layout of specialized laboratories in the room between the dust purification zone, hot air circulation oven overhaul, preparation room purification, these rooms and clean rooms directly connected, should be taken with the same arrangement of the rooms clean areas return air, otherwise can not reach the level of clean design. General safety knowledge laboratory decontamination as follows: (1) the use of flammable, explosive, laboratory, preparation room when corrosive and toxic chemicals and electrical equipment, such as purification Which is good, should strictly abide by the rules. Use of electrical equipment should be particularly careful, must not use wet hands to open the gates and electrical switches. Any leakage of the instrument should not be used to prevent electric shock. Electric power supply should be cut off after use. (2) non-laboratory purification plant diet, smoking, ban all chemicals entrance. Wash hands experiment is completed. (3) the use of chromic acid lotion, strong acid, strong alkali, such as having a strong corrosive reagents laboratory, preparation room purification specialists, not splashed on the skin and clothing. There are cases when the experiment encountered concentrated acids, toxic or irritating gas, liquid, etc., should be operated in a fume hood. When the tube is heated by liquid, the tube can not be human mouth. A plan view of the container not being heated. (4) storage location and use of the familiar fire equipment. Encounter an accident, should take appropriate measures to deal with immediately. Laboratory preparation room purifier price | Hebei Ericsson (certified) | laboratories, preparation rooms purification by Hebei Medical Engineering Co., Ericsson. Ericsson Hebei Medical Engineering Co., Ltd. (www.hslixin.com) Hebei Hengshui, a leader in medical device manufacturing equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Hebei Ericsson leadership with the staff warmly welcome all inquiries negotiations to create a better future Hebei Ericsson.