What considerations should be taken regarding the use and storage of chemical reagents?

Online excerpts: I. Storage 1. Classified storage: Toxic or precursor chemicals should be stored in designated toxic substance cabinets, with dedicated personnel in charge of them. Flammable and explosive reagents should be kept in explosion-proof cabinets, while volatile chemicals should be stored in ventilated cabinets equipped with alarm systems. Note that some chemicals require protection from light and should be packaged in brown bottles. Biochemical reagents are often stored at low temperatures; in such cases, a refrigerator may be necessary. 2. Use: The use of chemical reagents must adhere to the principle of safety first. When working with volatile or toxic reagents, it is important to ensure good ventilation in the laboratory; this can be achieved by using fume hoods or exhaust systems with adjustable vents； During experiments, it is necessary to wear goggles and other protective equipment. 3. Handling of emergency situations: If reagents accidentally get on the skin or eyes while using them, there are several ways to deal with this situation. For reagents that undergo chemical or physical reactions when in contact with water, such as generating heat, first wipe the affected area with a clean cloth, then rinse it thoroughly with plenty of water, and finally seek medical attention ； If it shows no reaction when exposed to water, rinse it thoroughly with clean water and then take it to a medical facility ； Laboratories should be equipped with emergency eye wash stations or emergency showers ；