Features of the fume hood
Because of the fume hood occupies a very important position in the biochemistry laboratory, from improving the laboratory environment, improve working health conditions, improve work efficiency and other considerations, the use of the number of units increased fume hood leap. The major aim is to fume hood exhaust gases generated in the experiment, to protect the health of laboratory personnel, that have a high degree of safety and excellent operability, which requires the fume hood shall have the following functions:
(1) release function: should have outdoor agency after the harmful gas generated inside the fume hood with a way to absorb the gas outside the cabinet, to dilute excluded.
(2), does not back function: inside the fume hood should have airflow generated by the exhaust fan from harmful gases inside the fume hood is not flowing into the interior of the reverse function. To ensure the realization of this function, a fume hood and a fan with a single pipe connection is the best way, not a single pipe connections, it is also limited to the same level and the same room can be connected, as the ventilation fan Installation at the end of the pipe (or layers at the top).
(3) isolation: in front of the fume hood should be a sliding glass window with no fume hood inside and outside will be separated.
(4), the supplemental feature: should have in the discharge of harmful gases from the air passage outside the fume hood or alternative means inhalation.
(5), wind speed control function: to prevent the escape of harmful gases inside the fume hood, need a certain amount of suction speed.
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