Proper Use and Maintenance of Fume Hoods
A fume hood is a critical piece of equipment in any laboratory, designed to protect users from exposure to hazardous substances. However, its effectiveness depends not only on its design but also on correct usage and regular maintenance. To ensure optimal performance and safety, the following guidelines should be followed:
First, when conducting experiments that produce harmful vapors or particles, make sure that the equipment is placed at least 150 mm away from the fume hood's operating opening. This helps prevent dangerous substances from escaping into the lab environment.
Second, avoid placing any objects that might block the exhaust slots of the fume hood. These slots are essential for maintaining proper airflow and capturing contaminants effectively.
After completing an experiment, do not turn off the fan immediately. Allow it to run for 3–5 minutes to ensure all residual fumes are fully removed from the hood.
It’s important not to use the fume hood as a storage unit. Storing items inside can interfere with airflow and reduce its efficiency.
Regular cleaning of the interior surfaces of the fume hood is crucial. Keep the cabinet clean and sealed at all times. If there are any damages, they should be repaired immediately to maintain safety standards.
Fans, ducts, and other components should be inspected periodically to ensure they are functioning properly. Any issues should be addressed promptly to avoid system failure.
Fume hoods should be tested and adjusted at regular intervals to ensure they operate under the intended conditions. This helps maintain their efficiency and safety performance.
Additionally, avoid leaving high-temperature devices, such as electric hot plates, inside the fume hood for extended periods. They can affect the internal temperature and potentially compromise the hood's functionality.
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