Precautions for the operation of laboratory fume hood

The fume hood has an important position in the use of the laboratory, he shoulders the heavy responsibility of protecting the safety of the laboratory staff, so it needs to have some precautions in use, today we will give you a specific explanation.

What should be paid attention to before, during and after the experiment is introduced as follows:
1. Before the experiment starts, it must be confirmed that the fume hood should be in operation state before the experiment can be carried out.
2. During the experiment, do not put any equipment within 150mm from the glass window, large experimental equipment should have sufficient space, should not affect the flow of air, the front window should be closed as far as possible.
3. At least 5 minutes before the end of the experiment, the fan can be closed to discharge the residual gas in the pipeline. Also consider installing an exhaust time delay device to ensure delayed operation of the fan.