Handling, carrying, or working with dangerous materials is not permitted by inadequately trained or unauthorized personnel. Emergency telephone numbers are posted in a conspicuous place in the laboratory. Reagents and chemicals are not stored in lockers. Cover glasses are used to prevent spattering when liquids are heated on hot plates. Heating mantles are used to heat flammable liquids.
Fume hoods have safety glass windows or safety shields for use with potential explosives.
All containers of mercury are kept well stoppered. Large containers of chemicals are stored on or near the floor. Drums containing liquid chemicals are mounted horizontally and securely braced to prevent rolling. Drum taps are spring closing and have locking pins. First aid supplies are readily available, and have been approved by a consulting physician.