Chapter 4: High Performance Features and Safety
29.Use the smallest possible quantity of chemical(s) within the enclosure and never exceed the amount, which can be effectively adsorbed by the Odor Control carbon filter before breakthrough.
30.For weighing procedures, adjust face velocity between 60 and 100 FPM for effective operation.
31.Leave the blower on for at least one minute after work in the enclosure has been completed.
32.If a chemical, powder or particulates are spilled on the work surface, DO NOT switch off the blower until all traces have been removed.
33.Tag enclosures with appropriate warning, if filters have been removed for service.
34.If the blower fails during use, processes should cease and the area should be vacated and ventilated.
35.Always refer to the NIOSH Pocket Guide to Chemical Hazards before proceeding.
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