9.9.1 Reactive chemicals (water reactive, air reactive, or unstable in nature), must be handled with extreme care. MSDS sheets should be carefully reviewed to verify safe handling procedures for specific chemicals/compounds. Laboratory work involving reactive chemicals should be stored such that proper compatibility is insured and conditions such as temperature and sunlight are maintained within safe limits for each specific type of chemical. Refrigerators used for storing flammable or reactive chemicals should be explosion proof. Standard Operating Procedures (SOPs) must be created and reviewed specific to reactive chemicals and processes.