Safety instructions for laboratory fume hoods

Fume hood rules of use Ventilation is an integral part of laboratory equipment. In a scientific laboratory environment, good ventilation effects are useful for creating a clean laboratory environment, ensuring the scientificity and reliability of experimental conditions, and safety during the experiment. Sex is very important; therefore, when we use a fume hood, we should pay attention to the following points: 1. The indoor air temperature is between -5 ℃ and +40 ℃, and the average value of 24 hours does not exceed +25 ℃; 2. In the laboratory When not using a fume hood, it is necessary to ventilate frequently, which is beneficial to the health of the test personnel; 3. When more than two fume hoods use a fan, to avoid operating errors or improper operation, the fan is turned on and off. It can only be controlled by one operator; if another fume hood is temporarily not in use or is to be stopped, the air volume adjustment valve can be used to close the vent; avoid repeating "on" and "off" of the fans, which will not only affect the life of the fan Damage is not accurate for the experiment. 4. When using the fume hood, avoid the interference of the countercurrent wind direction caused by people walking Disposable Vape, Electronic Cigarettes, vapeon the fume hood; 5. When the fume hood is used, make up the air for 10 minutes every 2 hours (that is, open the window to ventilate); the use time exceeds 5 For small hours, open the windows to avoid negative pressure in the room. Safety matters For the safety of the laboratory, please pay attention to the following matters: 1. It is forbidden to do experimental courses in the fume hood when the fume hood is not turned on; 2. It is forbidden to extend the head into the fume hood to operate or view during the experiment ; 3. It is forbidden to store or experiment inflammable and explosive materials in the fume hood; 4. It is forbidden to put the mobile plug row or wire in the fume hood; Mixed experiment; 6. It is forbidden to place the tested substance in the fume hood without safety. If the chemical substance splashes out, the power should be cut off immediately; 7. When moving the upper and lower windows, be slow and light. Move the operation to prevent the door handle from crushing the hand; 8. During the experiment, it is appropriate to move the window 100-150mm from the table top; 9. The operation area of the fume hood should be kept clear, and avoid stacking items around the fume hood; If the cabinet is malfunctioning or the sound of the fan is not correct, the operation must be stopped, and professional maintenance personnel must maintain it. It is not allowed to disassemble and maintain it by yourself. In the case of wind cabinets, avoid storing too many test equipment or chemical substances on the ventilated countertop, and prohibit long-term stacking; 12. If there is poor ventilation, please contact the sales staff in time to facilitate the engineering department to carry out maintenance as soon as possible. This content is provided by Beijing Yinghai Dongxu Laboratory Equipment Co., Ltd.

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