If chemicals need to be stored in the hood for a period of time, install shelves on the sides of the hood, away from the baffles. Keep the sash clean and clear. Clean all chemical residues from the hood chamber after each use. All electrical devices should be connected outside the hood to avoid sparks which may ignite a flammable or explosive chemical. Certain chemicals or reactions require specially constructed hoods.
Examples are perchloric acid or high pressure reactions.
Most special use hoods are labeled as to the uses for which they are designed. If you have any questions about the capabilities of a particular hood, contact EHS at 8-5294.