The fume hood of forensic laboratory is one of the most important equipment in the laboratory safety environment, and its main role is to eliminate harmful gases and ensure the health and safety of laboratory personnel. In this paper, the design and construction of the Keyipal laboratory will focus on the application of the fume hood in the forensic laboratory, and introduce its importance in the work of judicial forensics and how to use the fume hood correctly and reasonably.
1.The function and principle of the fume hood.
The fume hood is a specially designed equipment, which generates negative pressure through the internal fan, sucks the harmful gases generated in the experimental operation area into the fume hood, and discharges them to the outside after filtration treatment, so as to protect the experimenters from harmful gases and ensure the safety of experimental operations.
2.Application scenarios for forensic laboratory fume hoods.
Chemical experiments: In forensic experiments, the use and handling of chemicals may be involved, and the fume hood can effectively reduce the harm caused by harmful gases to experimenters.
Physical evidence processing: When handling some potentially harmful physical evidence samples, the fume hood can discharge harmful gases in time to protect the health of experimenters.
Sample Analysis: For some samples that need to be analyzed under specific conditions, the fume hood provides a safe operating environment.
Biological experiments: When conducting some biological experiments, a fume hood is also required to ensure the safety of the experimental operation.
3.Precautions for using fume hoods.
Correct start-up: Before conducting the experiment, ensure that the fan of the fume hood is running normally, and open the exhaust port at the top of the fume hood to ensure that the ventilation effect is good.
Proper location: Place the experimental table in front of the fume hood to ensure that harmful gases can be discharged in time and avoid direct exposure of experimenters to harmful gases.
Avoid blockages: Keep the vents around the fume hood clear and do not accumulate items to avoid affecting the ventilation effect.
End of Experiment: After the experiment, continue to run the fume hood for a period of time to ensure that the air in the laboratory is thoroughly cleaned.
Regular maintenance: Regularly clean and maintain the fume hood to keep it in good working condition.
4.Classification and selection of fume hoods.
Vertical flow fume hood: suitable for general experimental operations, more common.
Horizontal flow fume hood: suitable for volatile toxic chemical experiments, safer.
High-efficiency filter fume hood: Able to filter smaller particulate matter, suitable for experiments with higher experimental environment requirements.
When choosing a fume hood, it is necessary to choose according to the specific situation of the laboratory, the characteristics of the experimental operation and the nature of harmful gases, so as to ensure that the suitable fume hood is selected.
Through the rational application of fume hoods, the forensic laboratory can effectively ensure the health and safety of experimental operators, create a safe and comfortable working environment, and promote the smooth development of judicial forensics.
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