This technical data sheet describes requirements for adequate ventilation of materials such as paints, solvents, adhesives and aerosols commonly used by art conservators during cleaning and other treatments. Topics include dilution ventilation, local exhaust (extraction) ventilation, hood types (fume, movable, elephant trunk, slot, lateral, canopy, updraft), spray booths, ducts, mechanical requirements (eg. ducts, fans, air cleaners), fire and explosion hazards, testing and OSHA standards. This is a reference for occupational health and safety in laboratories. -- CCI