Reagent bottle classification

Glass, plastic; glass stopper, rubber stopper; wide mouth, narrow mouth; brown, transparent; grinding mouth, non-grinding mouth and other classification methods.
Hydrofluoric acid should be stored in plastic bottles, and other reagents generally use glass bottles.
Alkaline substances such as sodium hydroxide and water glass should be treated with rubber stoppers instead of glass stoppers. Organic solvents such as benzene, toluene, and ether should use glass stoppers instead of rubber stoppers.
Wide-mouth bottles are used to hold solid reagents, and narrow-mouth bottles are used to hold liquid reagents. Liquid bromine is stored in a narrow-mouth bottle, water is added to the liquid surface to make it "water-sealed", and the bottle mouth is sealed with wax. White phosphorus should be kept in water in small quantities.
Reagents that are easily decomposed or deteriorated when exposed to light are generally stored in brown bottles, such as nitric acid, silver nitrate, chlorine, etc. Place in a cool dark place. Others generally use colorless bottles.
The ground stopper bottle (the inside of the bottle mouth is frosted) can maintain a seal and prevent the reagent from absorbing moisture and changing its concentration. A dropper bottle with a ground-mouth dropper is called a dropper bottle. Reagents that deteriorate due to absorption of carbon dioxide or water vapor should be sealed and stored (such as NaOH, lime water, bleaching powder, water glass, Na2O2, etc.). Concentrated hydrochloric acid, ammonia, iodine, and low-boiling organic matter such as benzene, toluene, and ether are stored in bottles sealed with plastic caps and placed in a cool and dark place.
Among reagents that are easily oxidized and deteriorated, active potassium, sodium, calcium, etc. are stored in kerosene; potassium iodide, ferrous sulfide, sodium sulfate, etc. are usually stored as solids instead of solutions; when using ferrous sulfate or ferrous oxide solutions, Put a small amount of iron powder or iron nails.
Most laboratories in the world use reagent bottles produced by German companies. Because their lids are made of blue plastic, they are also called blue-capped reagent bottles.